163338975 has 36 divisors (see below), whose sum is σ = 309774816. Its totient is φ = 81987840.

The previous prime is 163338961. The next prime is 163338997. The reversal of 163338975 is 579833361.

163338975 is a `hidden beast` number, since 1 + 633 + 3 + 8 + 9 + 7 + 5 = 666.

It is not a de Polignac number, because 163338975 - 2⁵ = 163338943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 163338975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17527 + ... + 25176.

It is an arithmetic number, because the mean of its divisors is an integer number (8604856).

Almost surely, 2^163338975 is an apocalyptic number.

163338975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

163338975 is a deficient number, since it is larger than the sum of its proper divisors (146435841).

163338975 is a wasteful number, since it uses less digits than its factorization.

163338975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42736 (or 42728 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 163338975 is about 12780.4137256976. The cubic root of 163338975 is about 546.6339595162.

The spelling of 163338975 in words is "one hundred sixty-three million, three hundred thirty-eight thousand, nine hundred seventy-five".