1164985656 has 32 divisors (see below), whose sum is σ = 3083786640. Its totient is φ = 365485568.

The previous prime is 1164985607. The next prime is 1164985681. The reversal of 1164985656 is 6565894611.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 1164985599 and 1164985608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1427271 + ... + 1428086.

Almost surely, 2^1164985656 is an apocalyptic number.

It is an amenable number.

1164985656 is an abundant number, since it is smaller than the sum of its proper divisors (1918800984).

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

1164985656 is a wasteful number, since it uses less digits than its factorization.

1164985656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855383 (or 2855379 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 51.

The square root of 1164985656 is about 34131.8862063028. The cubic root of 1164985656 is about 1052.2207438195.

The spelling of 1164985656 in words is "one billion, one hundred sixty-four million, nine hundred eighty-five thousand, six hundred fifty-six".