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1044016493 = 1380308961
BaseRepresentation
bin111110001110100…
…110110101101101
32200202111112101112
4332032212311231
54114232011433
6251332521405
734604664602
oct7616466555
92622445345
101044016493
11496358053
12251780265
131383abc50
149c9286a9
15619c8348
hex3e3a6d6d

1044016493 has 4 divisors (see below), whose sum is σ = 1124325468. Its totient is φ = 963707520.

The previous prime is 1044016489. The next prime is 1044016511. The reversal of 1044016493 is 3946104401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3946104401 = 4357905693.

It can be written as a sum of positive squares in 2 ways, for example, as 662908009 + 381108484 = 25747^2 + 19522^2 .

It is a cyclic number.

It is not a de Polignac number, because 1044016493 - 22 = 1044016489 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1044016453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40154468 + ... + 40154493.

It is an arithmetic number, because the mean of its divisors is an integer number (281081367).

Almost surely, 21044016493 is an apocalyptic number.

1044016493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1044016493 is a deficient number, since it is larger than the sum of its proper divisors (80308975).

1044016493 is an equidigital number, since it uses as much as digits as its factorization.

1044016493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80308974.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 1044016493 is about 32311.2440645667. The cubic root of 1044016493 is about 1014.4620064613.

The spelling of 1044016493 in words is "one billion, forty-four million, sixteen thousand, four hundred ninety-three".

Divisors: 1 13 80308961 1044016493