1157097856 has 16 divisors (see below), whose sum is σ = 2305156140. Its totient is φ = 578548864.

The previous prime is 1157097829. The next prime is 1157097899. The reversal of 1157097856 is 6587907511.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4519786 + ... + 4520041.

Almost surely, 2^1157097856 is an apocalyptic number.

1157097856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1157097856 is a deficient number, since it is larger than the sum of its proper divisors (1148058284).

1157097856 is an frugal number, since it uses more digits than its factorization.

1157097856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9039841 (or 9039829 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 49.

The square root of 1157097856 is about 34016.1411097732. The cubic root of 1157097856 is about 1049.8405974195.

The spelling of 1157097856 in words is "one billion, one hundred fifty-seven million, ninety-seven thousand, eight hundred fifty-six".