161489152 has 36 divisors (see below), whose sum is σ = 351657936. Its totient is φ = 73402880.

The previous prime is 161489149. The next prime is 161489173. The reversal of 161489152 is 251984161.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25858 + ... + 31489.

It is an arithmetic number, because the mean of its divisors is an integer number (9768276).

Almost surely, 2^161489152 is an apocalyptic number.

It is an amenable number.

161489152 is an abundant number, since it is smaller than the sum of its proper divisors (190168784).

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

161489152 is an equidigital number, since it uses as much as digits as its factorization.

161489152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57374 (or 57360 counting only the distinct ones).

The product of its digits is 17280, while the sum is 37.

The square root of 161489152 is about 12707.8382111199. The cubic root of 161489152 is about 544.5625668211.

The spelling of 161489152 in words is "one hundred sixty-one million, four hundred eighty-nine thousand, one hundred fifty-two".