161579460 has 72 divisors (see below), whose sum is σ = 526296960. Its totient is φ = 36931776.

The previous prime is 161579459. The next prime is 161579479. The reversal of 161579460 is 64975161.

It is a super-2 number, since 2×161579460² = 52215843787783200, which contains 22 as substring.

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, 24540 + ... + 30419.

It is an arithmetic number, because the mean of its divisors is an integer number (7309680).

Almost surely, 2^161579460 is an apocalyptic number.

161579460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161579460 is an abundant number, since it is smaller than the sum of its proper divisors (364717500).

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

161579460 is a wasteful number, since it uses less digits than its factorization.

161579460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54985 (or 54976 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 161579460 is about 12711.3909545730. The cubic root of 161579460 is about 544.6640580386.

The spelling of 161579460 in words is "one hundred sixty-one million, five hundred seventy-nine thousand, four hundred sixty".