163990896 has 80 divisors (see below), whose sum is σ = 436353024. Its totient is φ = 53044992.

The previous prime is 163990829. The next prime is 163990903. The reversal of 163990896 is 698099361.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353961 + ... + 354423.

Almost surely, 2^163990896 is an apocalyptic number.

163990896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163990896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218176512).

163990896 is an abundant number, since it is smaller than the sum of its proper divisors (272362128).

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

163990896 is a wasteful number, since it uses less digits than its factorization.

163990896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 51.

The square root of 163990896 is about 12805.8930184505. The cubic root of 163990896 is about 547.3602387155.

The spelling of 163990896 in words is "one hundred sixty-three million, nine hundred ninety thousand, eight hundred ninety-six".