163156680 has 160 divisors (see below), whose sum is σ = 563622840. Its totient is φ = 42301440.

The previous prime is 163156673. The next prime is 163156691. The reversal of 163156680 is 86651361.

It is a happy number.

163156680 is a `hidden beast` number, since 16 + 3 + 1 + 566 + 80 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 136469124 + 26687556 = 11682^2 + 5166^2 .

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

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 39 ways as a sum of consecutive naturals, for example, 119200 + ... + 120560.

Almost surely, 2^163156680 is an apocalyptic number.

163156680 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 163156680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281811420).

163156680 is an abundant number, since it is smaller than the sum of its proper divisors (400466160).

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

163156680 is a wasteful number, since it uses less digits than its factorization.

163156680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421 (or 1408 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 163156680 is about 12773.2799233400. The cubic root of 163156680 is about 546.4305262741.

It can be divided in two parts, 1631 and 56680, that added together give a triangular number (58311 = T₃₄₁).

The spelling of 163156680 in words is "one hundred sixty-three million, one hundred fifty-six thousand, six hundred eighty".