1137513865 has 4 divisors (see below), whose sum is σ = 1365016644. Its totient is φ = 910011088.

The previous prime is 1137513851. The next prime is 1137513889. The reversal of 1137513865 is 5683157311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 269386569 + 868127296 = 16413^2 + 29464^2 .

It is a cyclic number.

It is not a de Polignac number, because 1137513865 - 2⁵ = 1137513833 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113751382 + ... + 113751391.

It is an arithmetic number, because the mean of its divisors is an integer number (341254161).

Almost surely, 2^1137513865 is an apocalyptic number.

It is an amenable number.

1137513865 is a deficient number, since it is larger than the sum of its proper divisors (227502779).

1137513865 is an equidigital number, since it uses as much as digits as its factorization.

1137513865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227502778.

The product of its digits is 75600, while the sum is 40.

The square root of 1137513865 is about 33727.0494558893. The cubic root of 1137513865 is about 1043.8839806017.

The spelling of 1137513865 in words is "one billion, one hundred thirty-seven million, five hundred thirteen thousand, eight hundred sixty-five".