1153978056 has 128 divisors (see below), whose sum is σ = 3996518400. Its totient is φ = 299730240.

The previous prime is 1153978027. The next prime is 1153978061. The reversal of 1153978056 is 6508793511.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18060 + ... + 51323.

It is an arithmetic number, because the mean of its divisors is an integer number (31222800).

Almost surely, 2^1153978056 is an apocalyptic number.

It is an amenable number.

1153978056 is an abundant number, since it is smaller than the sum of its proper divisors (2842540344).

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

1153978056 is a wasteful number, since it uses less digits than its factorization.

1153978056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69416 (or 69406 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 1153978056 is about 33970.2525159882. The cubic root of 1153978056 is about 1048.8962115027.

The spelling of 1153978056 in words is "one billion, one hundred fifty-three million, nine hundred seventy-eight thousand, fifty-six".