163256415 has 32 divisors (see below), whose sum is σ = 311510016. Its totient is φ = 71385600.

The previous prime is 163256407. The next prime is 163256437. The reversal of 163256415 is 514652361.

It is not a de Polignac number, because 163256415 - 2³ = 163256407 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31386 + ... + 36215.

It is an arithmetic number, because the mean of its divisors is an integer number (9734688).

Almost surely, 2^163256415 is an apocalyptic number.

163256415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

163256415 is a deficient number, since it is larger than the sum of its proper divisors (148253601).

163256415 is a wasteful number, since it uses less digits than its factorization.

163256415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67639.

The product of its digits is 21600, while the sum is 33.

The square root of 163256415 is about 12777.1833750635. The cubic root of 163256415 is about 546.5418449315.

The spelling of 163256415 in words is "one hundred sixty-three million, two hundred fifty-six thousand, four hundred fifteen".