1145642449 has 8 divisors (see below), whose sum is σ = 1378216640. Its totient is φ = 930296016.

The previous prime is 1145642431. The next prime is 1145642453. The reversal of 1145642449 is 9442465411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1145642449 - 2¹³ = 1145634257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145642149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4306794 + ... + 4307059.

It is an arithmetic number, because the mean of its divisors is an integer number (172277080).

Almost surely, 2^1145642449 is an apocalyptic number.

1145642449 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1145642449 is a deficient number, since it is larger than the sum of its proper divisors (232574191).

1145642449 is an equidigital number, since it uses as much as digits as its factorization.

1145642449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8613879.

The product of its digits is 138240, while the sum is 40.

The square root of 1145642449 is about 33847.3403534162. The cubic root of 1145642449 is about 1046.3645853032.

The spelling of 1145642449 in words is "one billion, one hundred forty-five million, six hundred forty-two thousand, four hundred forty-nine".