163915 has 4 divisors (see below), whose sum is σ = 196704. Its totient is φ = 131128.

The previous prime is 163909. The next prime is 163927. The reversal of 163915 is 519361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 519361 = 29 ⋅17909.

It is a cyclic number.

It is not a de Polignac number, because 163915 - 2⁵ = 163883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163915.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16387 + ... + 16396.

It is an arithmetic number, because the mean of its divisors is an integer number (49176).

2¹⁶³⁹¹⁵ is an apocalyptic number.

163915 is a deficient number, since it is larger than the sum of its proper divisors (32789).

163915 is an equidigital number, since it uses as much as digits as its factorization.

163915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32788.

The product of its digits is 810, while the sum is 25.

The square root of 163915 is about 404.8641747549. The cubic root of 163915 is about 54.7275785119.

The spelling of 163915 in words is "one hundred sixty-three thousand, nine hundred fifteen".