1151683956 has 18 divisors (see below), whose sum is σ = 2911201202. Its totient is φ = 383894640.

The previous prime is 1151683919. The next prime is 1151683961. The reversal of 1151683956 is 6593861511.

1151683956 is a `hidden beast` number, since 1 + 1 + 516 + 83 + 9 + 56 = 666.

It can be written as a sum of positive squares in only one way, i.e., 674960400 + 476723556 = 25980^2 + 21834^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15995575 + ... + 15995646.

Almost surely, 2^1151683956 is an apocalyptic number.

It is an amenable number.

1151683956 is an abundant number, since it is smaller than the sum of its proper divisors (1759517246).

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

1151683956 is a wasteful number, since it uses less digits than its factorization.

1151683956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31991231 (or 31991226 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 1151683956 is about 33936.4694097662. The cubic root of 1151683956 is about 1048.2006843794.

The spelling of 1151683956 in words is "one billion, one hundred fifty-one million, six hundred eighty-three thousand, nine hundred fifty-six".