161974080 has 168 divisors, whose sum is σ = 578034912. Its totient is φ = 43172352.

The previous prime is 161974051. The next prime is 161974091. The reversal of 161974080 is 80479161.

161974080 is a `hidden beast` number, since 161 + 97 + 408 + 0 = 666.

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 23 ways as a sum of consecutive naturals, for example, 76719 + ... + 78801.

It is an arithmetic number, because the mean of its divisors is an integer number (3440684).

Almost surely, 2^161974080 is an apocalyptic number.

161974080 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 161974080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289017456).

161974080 is an abundant number, since it is smaller than the sum of its proper divisors (416060832).

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

161974080 is an equidigital number, since it uses as much as digits as its factorization.

161974080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115 (or 2093 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 161974080 is about 12726.9037868603. The cubic root of 161974080 is about 545.1071023694.

The spelling of 161974080 in words is "one hundred sixty-one million, nine hundred seventy-four thousand, eighty".