1020046549 has 4 divisors (see below), whose sum is σ = 1020118060. Its totient is φ = 1019975040.

The previous prime is 1020046543. The next prime is 1020046553. The reversal of 1020046549 is 9456400201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 747202225 + 272844324 = 27335^2 + 16518^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020046549 - 2⁹ = 1020046037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020046549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020046543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6234 + ... + 45595.

It is an arithmetic number, because the mean of its divisors is an integer number (255029515).

Almost surely, 2^1020046549 is an apocalyptic number.

It is an amenable number.

1020046549 is a deficient number, since it is larger than the sum of its proper divisors (71511).

1020046549 is an equidigital number, since it uses as much as digits as its factorization.

1020046549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71510.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1020046549 is about 31938.1675898916. The cubic root of 1020046549 is about 1006.6380221639.

The spelling of 1020046549 in words is "one billion, twenty million, forty-six thousand, five hundred forty-nine".