163739872 has 48 divisors (see below), whose sum is σ = 347276160. Its totient is φ = 75745152.

The previous prime is 163739833. The next prime is 163739941. The reversal of 163739872 is 278937361.

It is a happy 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, 23013 + ... + 29275.

It is an arithmetic number, because the mean of its divisors is an integer number (7234920).

Almost surely, 2^163739872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163739872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173638080).

163739872 is an abundant number, since it is smaller than the sum of its proper divisors (183536288).

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

163739872 is a wasteful number, since it uses less digits than its factorization.

163739872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6335 (or 6327 counting only the distinct ones).

The product of its digits is 381024, while the sum is 46.

The square root of 163739872 is about 12796.0881522440. The cubic root of 163739872 is about 547.0808111643.

The spelling of 163739872 in words is "one hundred sixty-three million, seven hundred thirty-nine thousand, eight hundred seventy-two".