163965372 has 12 divisors (see below), whose sum is σ = 382585896. Its totient is φ = 54655120.

The previous prime is 163965359. The next prime is 163965379. The reversal of 163965372 is 273569361.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163965379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6831879 + ... + 6831902.

It is an arithmetic number, because the mean of its divisors is an integer number (31882158).

Almost surely, 2^163965372 is an apocalyptic number.

163965372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

163965372 is an abundant number, since it is smaller than the sum of its proper divisors (218620524).

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

163965372 is a wasteful number, since it uses less digits than its factorization.

163965372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13663788 (or 13663786 counting only the distinct ones).

The product of its digits is 204120, while the sum is 42.

The square root of 163965372 is about 12804.8964072342. The cubic root of 163965372 is about 547.3318396845.

The spelling of 163965372 in words is "one hundred sixty-three million, nine hundred sixty-five thousand, three hundred seventy-two".