164163999 has 16 divisors (see below), whose sum is σ = 222531840. Its totient is φ = 107627520.

The previous prime is 164163991. The next prime is 164164031. The reversal of 164163999 is 999361461.

It is not a de Polignac number, because 164163999 - 2³ = 164163991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164163991) 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, 115807 + ... + 117215.

It is an arithmetic number, because the mean of its divisors is an integer number (13908240).

Almost surely, 2^164163999 is an apocalyptic number.

164163999 is a deficient number, since it is larger than the sum of its proper divisors (58367841).

164163999 is a wasteful number, since it uses less digits than its factorization.

164163999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030.

The product of its digits is 314928, while the sum is 48.

The square root of 164163999 is about 12812.6499600980. The cubic root of 164163999 is about 547.5527623720.

The spelling of 164163999 in words is "one hundred sixty-four million, one hundred sixty-three thousand, nine hundred ninety-nine".