163831680 has 256 divisors, whose sum is σ = 612000000. Its totient is φ = 41306112.

The previous prime is 163831673. The next prime is 163831693. The reversal of 163831680 is 86138361.

163831680 is a `hidden beast` number, since 1 + 638 + 3 + 16 + 8 + 0 = 666.

163831680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 328071 + ... + 328569.

It is an arithmetic number, because the mean of its divisors is an integer number (2390625).

Almost surely, 2^163831680 is an apocalyptic number.

163831680 is a gapful number since it is divisible by the number (10) 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 163831680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306000000).

163831680 is an abundant number, since it is smaller than the sum of its proper divisors (448168320).

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

163831680 is a wasteful number, since it uses less digits than its factorization.

163831680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 163831680 is about 12799.6749958739. The cubic root of 163831680 is about 547.1830404100.

The spelling of 163831680 in words is "one hundred sixty-three million, eight hundred thirty-one thousand, six hundred eighty".