161490192 has 20 divisors (see below), whose sum is σ = 417183120. Its totient is φ = 53830048.

The previous prime is 161490187. The next prime is 161490209. The reversal of 161490192 is 291094161.

It is a super-2 number, since 2×161490192² = 52158164224393728, which contains 22 as substring.

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, 1682142 + ... + 1682237.

It is an arithmetic number, because the mean of its divisors is an integer number (20859156).

Almost surely, 2^161490192 is an apocalyptic number.

161490192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161490192 is an abundant number, since it is smaller than the sum of its proper divisors (255692928).

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

161490192 is a wasteful number, since it uses less digits than its factorization.

161490192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3364390 (or 3364384 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 161490192 is about 12707.8791306811. The cubic root of 161490192 is about 544.5637358239.

It can be divided in two parts, 1614 and 90192, that added together give a triangular number (91806 = T₄₂₈).

The spelling of 161490192 in words is "one hundred sixty-one million, four hundred ninety thousand, one hundred ninety-two".