1157664097 has 4 divisors (see below), whose sum is σ = 1182295296. Its totient is φ = 1133032900.

The previous prime is 1157664089. The next prime is 1157664127. The reversal of 1157664097 is 7904667511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1157664097 - 2³ = 1157664089 is a prime.

It is a super-2 number, since 2×1157664097² = 2680372322965650818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157664007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12315529 + ... + 12315622.

It is an arithmetic number, because the mean of its divisors is an integer number (295573824).

Almost surely, 2^1157664097 is an apocalyptic number.

It is an amenable number.

1157664097 is a deficient number, since it is larger than the sum of its proper divisors (24631199).

1157664097 is an equidigital number, since it uses as much as digits as its factorization.

1157664097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24631198.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 1157664097 is about 34024.4632139877. The cubic root of 1157664097 is about 1050.0118205774.

The spelling of 1157664097 in words is "one billion, one hundred fifty-seven million, six hundred sixty-four thousand, ninety-seven".