1345896857 has 2 divisors, whose sum is σ = 1345896858. Its totient is φ = 1345896856.

The previous prime is 1345896823. The next prime is 1345896907. The reversal of 1345896857 is 7586985431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1019588761 + 326308096 = 31931^2 + 18064^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345896857 - 2²⁴ = 1329119641 is a prime.

It is a super-2 number, since 2×1345896857² = 3622876699364956898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1345896157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672948428 + 672948429.

It is an arithmetic number, because the mean of its divisors is an integer number (672948429).

Almost surely, 2^1345896857 is an apocalyptic number.

It is an amenable number.

1345896857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345896857 is an equidigital number, since it uses as much as digits as its factorization.

1345896857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7257600, while the sum is 56.

The square root of 1345896857 is about 36686.4669462733. The cubic root of 1345896857 is about 1104.0886015607.

The spelling of 1345896857 in words is "one billion, three hundred forty-five million, eight hundred ninety-six thousand, eight hundred fifty-seven".