163964472 has 64 divisors (see below), whose sum is σ = 469497600. Its totient is φ = 46744320.

The previous prime is 163964467. The next prime is 163964483. The reversal of 163964472 is 274469361.

163964472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109972 + ... + 111452.

It is an arithmetic number, because the mean of its divisors is an integer number (7335900).

Almost surely, 2^163964472 is an apocalyptic number.

163964472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

163964472 is an abundant number, since it is smaller than the sum of its proper divisors (305533128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163964472 is a wasteful number, since it uses less digits than its factorization.

163964472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156 (or 2152 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 163964472 is about 12804.8612643792. The cubic root of 163964472 is about 547.3308382545.

The spelling of 163964472 in words is "one hundred sixty-three million, nine hundred sixty-four thousand, four hundred seventy-two".