1130865815 has 16 divisors (see below), whose sum is σ = 1398770208. Its totient is φ = 877180416.

The previous prime is 1130865811. The next prime is 1130865821. The reversal of 1130865815 is 5185680311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1130865815 - 2² = 1130865811 is a prime.

It is a super-2 number, since 2×1130865815² = 2557714983071228450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130865811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10259 + ... + 48651.

It is an arithmetic number, because the mean of its divisors is an integer number (87423138).

Almost surely, 2^1130865815 is an apocalyptic number.

1130865815 is a deficient number, since it is larger than the sum of its proper divisors (267904393).

1130865815 is a wasteful number, since it uses less digits than its factorization.

1130865815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38578.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 1130865815 is about 33628.3483834696. The cubic root of 1130865815 is about 1041.8463918016.

The spelling of 1130865815 in words is "one billion, one hundred thirty million, eight hundred sixty-five thousand, eight hundred fifteen".