161379912 has 96 divisors (see below), whose sum is σ = 437659200. Its totient is φ = 49560576.

The previous prime is 161379899. The next prime is 161379913. The reversal of 161379912 is 219973161.

It is a happy number.

161379912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (161379913) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 367389 + ... + 367827.

It is an arithmetic number, because the mean of its divisors is an integer number (4558950).

Almost surely, 2^161379912 is an apocalyptic number.

161379912 is a gapful number since it is divisible by the number (12) 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 161379912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218829600).

161379912 is an abundant number, since it is smaller than the sum of its proper divisors (276279288).

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

161379912 is a wasteful number, since it uses less digits than its factorization.

161379912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 514 counting only the distinct ones).

The product of its digits is 20412, while the sum is 39.

The square root of 161379912 is about 12703.5393493310. The cubic root of 161379912 is about 544.4397485951.

The spelling of 161379912 in words is "one hundred sixty-one million, three hundred seventy-nine thousand, nine hundred twelve".