163432644 has 24 divisors (see below), whose sum is σ = 385939680. Its totient is φ = 53820864.

The previous prime is 163432627. The next prime is 163432657. The reversal of 163432644 is 446234361.

163432644 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81049 + ... + 83040.

It is an arithmetic number, because the mean of its divisors is an integer number (16080820).

Almost surely, 2^163432644 is an apocalyptic number.

It is an amenable number.

163432644 is an abundant number, since it is smaller than the sum of its proper divisors (222507036).

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

163432644 is a wasteful number, since it uses less digits than its factorization.

163432644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164179 (or 164177 counting only the distinct ones).

The product of its digits is 41472, while the sum is 33.

The square root of 163432644 is about 12784.0777532054. The cubic root of 163432644 is about 546.7384311563.

The spelling of 163432644 in words is "one hundred sixty-three million, four hundred thirty-two thousand, six hundred forty-four".