1157855790 has 96 divisors (see below), whose sum is σ = 3481259040. Its totient is φ = 244290816.

The previous prime is 1157855789. The next prime is 1157855813. The reversal of 1157855790 is 975587511.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11185 + ... + 49404.

It is an arithmetic number, because the mean of its divisors is an integer number (36263115).

Almost surely, 2^1157855790 is an apocalyptic number.

1157855790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1157855790 is an abundant number, since it is smaller than the sum of its proper divisors (2323403250).

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

1157855790 is a wasteful number, since it uses less digits than its factorization.

1157855790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60626 (or 60619 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 48.

The square root of 1157855790 is about 34027.2800852492. The cubic root of 1157855790 is about 1050.0697731412.

The spelling of 1157855790 in words is "one billion, one hundred fifty-seven million, eight hundred fifty-five thousand, seven hundred ninety".