1157664089 has 2 divisors, whose sum is σ = 1157664090. Its totient is φ = 1157664088.

The previous prime is 1157664077. The next prime is 1157664127. The reversal of 1157664089 is 9804667511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 634032400 + 523631689 = 25180^2 + 22883^2 .

It is an emirp because it is prime and its reverse (9804667511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1157664089 - 2⁴ = 1157664073 is a prime.

It is a super-2 number, since 2×1157664089² = 2680372285920399842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1157664049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578832044 + 578832045.

It is an arithmetic number, because the mean of its divisors is an integer number (578832045).

Almost surely, 2^1157664089 is an apocalyptic number.

It is an amenable number.

1157664089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157664089 is an equidigital number, since it uses as much as digits as its factorization.

1157664089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 1157664089 is about 34024.4630964252. The cubic root of 1157664089 is about 1050.0118181587.

The spelling of 1157664089 in words is "one billion, one hundred fifty-seven million, six hundred sixty-four thousand, eighty-nine".