163290623 has 2 divisors, whose sum is σ = 163290624. Its totient is φ = 163290622.

The previous prime is 163290599. The next prime is 163290641. The reversal of 163290623 is 326092361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163290623 - 2⁸ = 163290367 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163290623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163290683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81645311 + 81645312.

It is an arithmetic number, because the mean of its divisors is an integer number (81645312).

Almost surely, 2^163290623 is an apocalyptic number.

163290623 is a deficient number, since it is larger than the sum of its proper divisors (1).

163290623 is an equidigital number, since it uses as much as digits as its factorization.

163290623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 163290623 is about 12778.5219411323. The cubic root of 163290623 is about 546.5800155556.

The spelling of 163290623 in words is "one hundred sixty-three million, two hundred ninety thousand, six hundred twenty-three".