163887923 has 2 divisors, whose sum is σ = 163887924. Its totient is φ = 163887922.

The previous prime is 163887883. The next prime is 163887929. The reversal of 163887923 is 329788361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163887923 - 2¹⁸ = 163625779 is a prime.

It is not a weakly prime, because it can be changed into another prime (163887929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81943961 + 81943962.

It is an arithmetic number, because the mean of its divisors is an integer number (81943962).

Almost surely, 2^163887923 is an apocalyptic number.

163887923 is a deficient number, since it is larger than the sum of its proper divisors (1).

163887923 is an equidigital number, since it uses as much as digits as its factorization.

163887923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The square root of 163887923 is about 12801.8718553187. The cubic root of 163887923 is about 547.2456487626.

The spelling of 163887923 in words is "one hundred sixty-three million, eight hundred eighty-seven thousand, nine hundred twenty-three".