1157115900 has 36 divisors (see below), whose sum is σ = 3347922872. Its totient is φ = 308564160.

The previous prime is 1157115887. The next prime is 1157115907. The reversal of 1157115900 is 95117511.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157115907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1928227 + ... + 1928826.

Almost surely, 2^1157115900 is an apocalyptic number.

1157115900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157115900 is an abundant number, since it is smaller than the sum of its proper divisors (2190806972).

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

1157115900 is a wasteful number, since it uses less digits than its factorization.

1157115900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857070 (or 3857063 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 30.

The square root of 1157115900 is about 34016.4063357669. The cubic root of 1157115900 is about 1049.8460545279.

The spelling of 1157115900 in words is "one billion, one hundred fifty-seven million, one hundred fifteen thousand, nine hundred".