168164977 has 2 divisors, whose sum is σ = 168164978. Its totient is φ = 168164976.

The previous prime is 168164957. The next prime is 168164999. The reversal of 168164977 is 779461861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139263601 + 28901376 = 11801^2 + 5376^2 .

It is a cyclic number.

It is not a de Polignac number, because 168164977 - 2²³ = 159776369 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168164977.

It is not a weakly prime, because it can be changed into another prime (168164957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84082488 + 84082489.

It is an arithmetic number, because the mean of its divisors is an integer number (84082489).

Almost surely, 2^168164977 is an apocalyptic number.

It is an amenable number.

168164977 is a deficient number, since it is larger than the sum of its proper divisors (1).

168164977 is an equidigital number, since it uses as much as digits as its factorization.

168164977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 49.

The square root of 168164977 is about 12967.8439611217. The cubic root of 168164977 is about 551.9653948498.

The spelling of 168164977 in words is "one hundred sixty-eight million, one hundred sixty-four thousand, nine hundred seventy-seven".