161563392 has 54 divisors (see below), whose sum is σ = 465833732. Its totient is φ = 53853696.

The previous prime is 161563373. The next prime is 161563439. The reversal of 161563392 is 293365161.

161563392 is a `hidden beast` number, since 1 + 6 + 1 + 563 + 3 + 92 = 666.

It is a super-2 number, since 2×161563392² = 52205459269091328, 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 5 ways as a sum of consecutive naturals, for example, 32758 + ... + 37365.

Almost surely, 2^161563392 is an apocalyptic number.

161563392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161563392 is an abundant number, since it is smaller than the sum of its proper divisors (304270340).

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

161563392 is an equidigital number, since it uses as much as digits as its factorization.

161563392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70145 (or 70128 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 161563392 is about 12710.7589073194. The cubic root of 161563392 is about 544.6460030370.

The spelling of 161563392 in words is "one hundred sixty-one million, five hundred sixty-three thousand, three hundred ninety-two".