1153115878 has 16 divisors (see below), whose sum is σ = 1780941744. Its totient is φ = 559548000.

The previous prime is 1153115863. The next prime is 1153115891. The reversal of 1153115878 is 8785113511.

It is a self number, because there is not a number n which added to its sum of digits gives 1153115878.

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, 9753 + ... + 49003.

It is an arithmetic number, because the mean of its divisors is an integer number (111308859).

Almost surely, 2^1153115878 is an apocalyptic number.

1153115878 is a deficient number, since it is larger than the sum of its proper divisors (627825866).

1153115878 is a wasteful number, since it uses less digits than its factorization.

1153115878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39687.

The product of its digits is 33600, while the sum is 40.

The square root of 1153115878 is about 33957.5599535656. The cubic root of 1153115878 is about 1048.6349238792.

The spelling of 1153115878 in words is "one billion, one hundred fifty-three million, one hundred fifteen thousand, eight hundred seventy-eight".