1158157100 has 36 divisors (see below), whose sum is σ = 2543498664. Its totient is φ = 457678080.

The previous prime is 1158157097. The next prime is 1158157151. The reversal of 1158157100 is 17518511.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61469 + ... + 78068.

Almost surely, 2^1158157100 is an apocalyptic number.

1158157100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1158157100 is an abundant number, since it is smaller than the sum of its proper divisors (1385341564).

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

1158157100 is a wasteful number, since it uses less digits than its factorization.

1158157100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139634 (or 139627 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 29.

The square root of 1158157100 is about 34031.7072742465. The cubic root of 1158157100 is about 1050.1608521526.

The spelling of 1158157100 in words is "one billion, one hundred fifty-eight million, one hundred fifty-seven thousand, one hundred".