199162657 has 2 divisors, whose sum is σ = 199162658. Its totient is φ = 199162656.

The previous prime is 199162637. The next prime is 199162661. The reversal of 199162657 is 756261991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197796096 + 1366561 = 14064^2 + 1169^2 .

It is an emirp because it is prime and its reverse (756261991) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199162657 is a prime.

It is the 14113-rd Hogben number.

It is not a weakly prime, because it can be changed into another prime (199162637) by changing a digit.

It is a nontrivial repunit in base 14112.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99581328 + 99581329.

It is an arithmetic number, because the mean of its divisors is an integer number (99581329).

Almost surely, 2^199162657 is an apocalyptic number.

It is an amenable number.

199162657 is a deficient number, since it is larger than the sum of its proper divisors (1).

199162657 is an equidigital number, since it uses as much as digits as its factorization.

199162657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 46.

The square root of 199162657 is about 14112.5000265722. The cubic root of 199162657 is about 583.9862707491.

The spelling of 199162657 in words is "one hundred ninety-nine million, one hundred sixty-two thousand, six hundred fifty-seven".