1161164736 has 84 divisors (see below), whose sum is σ = 3524079312. Its totient is φ = 364283904.

The previous prime is 1161164699. The next prime is 1161164759. The reversal of 1161164736 is 6374611611.

1161164736 is a `hidden beast` number, since 1 + 1 + 6 + 1 + 1 + 647 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1161164736.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49500 + ... + 69083.

Almost surely, 2^1161164736 is an apocalyptic number.

1161164736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1161164736 is an abundant number, since it is smaller than the sum of its proper divisors (2362914576).

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

1161164736 is a wasteful number, since it uses less digits than its factorization.

1161164736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118618 (or 118605 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 1161164736 is about 34075.8673550652. The cubic root of 1161164736 is about 1051.0691259961.

The spelling of 1161164736 in words is "one billion, one hundred sixty-one million, one hundred sixty-four thousand, seven hundred thirty-six".