163268977 has 2 divisors, whose sum is σ = 163268978. Its totient is φ = 163268976.

The previous prime is 163268951. The next prime is 163268993. The reversal of 163268977 is 779862361.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162919696 + 349281 = 12764^2 + 591^2 .

It is an emirp because it is prime and its reverse (779862361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163268977 - 2⁷ = 163268849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163268977.

It is not a weakly prime, because it can be changed into another prime (163268947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81634488 + 81634489.

It is an arithmetic number, because the mean of its divisors is an integer number (81634489).

Almost surely, 2^163268977 is an apocalyptic number.

It is an amenable number.

163268977 is a deficient number, since it is larger than the sum of its proper divisors (1).

163268977 is an equidigital number, since it uses as much as digits as its factorization.

163268977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 49.

The square root of 163268977 is about 12777.6749449968. The cubic root of 163268977 is about 546.5558627218. Note that the first 3 decimals are identical.

The spelling of 163268977 in words is "one hundred sixty-three million, two hundred sixty-eight thousand, nine hundred seventy-seven".