161674920 has 256 divisors, whose sum is σ = 608256000. Its totient is φ = 37843200.

The previous prime is 161674907. The next prime is 161674939. The reversal of 161674920 is 29476161.

161674920 is a `hidden beast` number, since 1 + 6 + 167 + 492 + 0 = 666.

161674920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161674920² = 52277559514012800, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 368061 + ... + 368499.

It is an arithmetic number, because the mean of its divisors is an integer number (2376000).

Almost surely, 2^161674920 is an apocalyptic number.

161674920 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 161674920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304128000).

161674920 is an abundant number, since it is smaller than the sum of its proper divisors (446581080).

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

161674920 is a wasteful number, since it uses less digits than its factorization.

161674920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 161674920 is about 12715.1452999956. The cubic root of 161674920 is about 544.7712981444.

The spelling of 161674920 in words is "one hundred sixty-one million, six hundred seventy-four thousand, nine hundred twenty".