161608692 has 48 divisors (see below), whose sum is σ = 435818880. Its totient is φ = 45652992.

The previous prime is 161608691. The next prime is 161608697. The reversal of 161608692 is 296806161.

It is a super-2 number, since 2×161608692² = 52234738659901728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161608692.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161608691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3333 + ... + 18284.

It is an arithmetic number, because the mean of its divisors is an integer number (9079560).

Almost surely, 2^161608692 is an apocalyptic number.

161608692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161608692 is an abundant number, since it is smaller than the sum of its proper divisors (274210188).

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

161608692 is a wasteful number, since it uses less digits than its factorization.

161608692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21720 (or 21718 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 161608692 is about 12712.5407373979. The cubic root of 161608692 is about 544.6969018577.

The spelling of 161608692 in words is "one hundred sixty-one million, six hundred eight thousand, six hundred ninety-two".