163169997 has 16 divisors (see below), whose sum is σ = 220938240. Its totient is φ = 107098992.

The previous prime is 163169989. The next prime is 163170011. The reversal of 163169997 is 799961361.

It is not a de Polignac number, because 163169997 - 2³ = 163169989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163169977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108988 + ... + 110474.

It is an arithmetic number, because the mean of its divisors is an integer number (13808640).

Almost surely, 2^163169997 is an apocalyptic number.

It is an amenable number.

163169997 is a deficient number, since it is larger than the sum of its proper divisors (57768243).

163169997 is a wasteful number, since it uses less digits than its factorization.

163169997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032.

The product of its digits is 551124, while the sum is 51.

The square root of 163169997 is about 12773.8011961984. The cubic root of 163169997 is about 546.4453925923.

The spelling of 163169997 in words is "one hundred sixty-three million, one hundred sixty-nine thousand, nine hundred ninety-seven".