1165913264 has 20 divisors (see below), whose sum is σ = 2377850040. Its totient is φ = 552274560.

The previous prime is 1165913251. The next prime is 1165913291. The reversal of 1165913264 is 4623195611.

It is a super-2 number, since 2×1165913264² = 2718707478342267392, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 1917317 + ... + 1917924.

It is an arithmetic number, because the mean of its divisors is an integer number (118892502).

Almost surely, 2^1165913264 is an apocalyptic number.

It is an amenable number.

1165913264 is an abundant number, since it is smaller than the sum of its proper divisors (1211936776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1165913264 is a wasteful number, since it uses less digits than its factorization.

1165913264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3835268 (or 3835262 counting only the distinct ones).

The product of its digits is 38880, while the sum is 38.

The square root of 1165913264 is about 34145.4720863543. The cubic root of 1165913264 is about 1052.4999430907.

The spelling of 1165913264 in words is "one billion, one hundred sixty-five million, nine hundred thirteen thousand, two hundred sixty-four".