164759857 has 2 divisors, whose sum is σ = 164759858. Its totient is φ = 164759856.

The previous prime is 164759843. The next prime is 164759867. The reversal of 164759857 is 758957461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90041121 + 74718736 = 9489^2 + 8644^2 .

It is a cyclic number.

It is not a de Polignac number, because 164759857 - 2⁷ = 164759729 is a prime.

It is not a weakly prime, because it can be changed into another prime (164759807) 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, 82379928 + 82379929.

It is an arithmetic number, because the mean of its divisors is an integer number (82379929).

Almost surely, 2^164759857 is an apocalyptic number.

It is an amenable number.

164759857 is a deficient number, since it is larger than the sum of its proper divisors (1).

164759857 is an equidigital number, since it uses as much as digits as its factorization.

164759857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2116800, while the sum is 52.

The square root of 164759857 is about 12835.8816214548. The cubic root of 164759857 is about 548.2144375847.

It can be divided in two parts, 1647 and 59857, that added together give a square (61504 = 248²).

The spelling of 164759857 in words is "one hundred sixty-four million, seven hundred fifty-nine thousand, eight hundred fifty-seven".