163376640 has 240 divisors, whose sum is σ = 647288928. Its totient is φ = 37306368.

The previous prime is 163376639. The next prime is 163376657. The reversal of 163376640 is 46673361.

It is a happy number.

163376640 is a `hidden beast` number, since 1 + 6 + 3 + 3 + 7 + 6 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is a junction number, because it is equal to n+sod(n) for n = 163376595 and 163376604.

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 23 ways as a sum of consecutive naturals, for example, 160774 + ... + 161786.

Almost surely, 2^163376640 is an apocalyptic number.

163376640 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 163376640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323644464).

163376640 is an abundant number, since it is smaller than the sum of its proper divisors (483912288).

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

163376640 is a wasteful number, since it uses less digits than its factorization.

163376640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 163376640 is about 12781.8871846062. The cubic root of 163376640 is about 546.6759731379.

The spelling of 163376640 in words is "one hundred sixty-three million, three hundred seventy-six thousand, six hundred forty".