1157391928 has 32 divisors (see below), whose sum is σ = 2705592960. Its totient is φ = 450931680.

The previous prime is 1157391889. The next prime is 1157391953. The reversal of 1157391928 is 8291937511.

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, 938826 + ... + 940057.

It is an arithmetic number, because the mean of its divisors is an integer number (84549780).

Almost surely, 2^1157391928 is an apocalyptic number.

It is an amenable number.

1157391928 is an abundant number, since it is smaller than the sum of its proper divisors (1548201032).

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

1157391928 is a wasteful number, since it uses less digits than its factorization.

1157391928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878907 (or 1878903 counting only the distinct ones).

The product of its digits is 136080, while the sum is 46.

The square root of 1157391928 is about 34020.4633713299. The cubic root of 1157391928 is about 1049.9295275454.

The spelling of 1157391928 in words is "one billion, one hundred fifty-seven million, three hundred ninety-one thousand, nine hundred twenty-eight".