163872365 has 8 divisors (see below), whose sum is σ = 196915968. Its totient is φ = 130918480.

The previous prime is 163872349. The next prime is 163872377. The reversal of 163872365 is 563278361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 163872365 - 2⁴ = 163872349 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

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, 18341 + ... + 25770.

It is an arithmetic number, because the mean of its divisors is an integer number (24614496).

Almost surely, 2^163872365 is an apocalyptic number.

It is an amenable number.

163872365 is a deficient number, since it is larger than the sum of its proper divisors (33043603).

163872365 is an equidigital number, since it uses as much as digits as its factorization.

163872365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44859.

The product of its digits is 181440, while the sum is 41.

The square root of 163872365 is about 12801.2641953832. The cubic root of 163872365 is about 547.2283314051.

The spelling of 163872365 in words is "one hundred sixty-three million, eight hundred seventy-two thousand, three hundred sixty-five".