161707492 has 12 divisors (see below), whose sum is σ = 283077760. Its totient is φ = 80828136.

The previous prime is 161707471. The next prime is 161707517. The reversal of 161707492 is 294707161.

It is a super-2 number, since 2×161707492² = 52298625937860128, 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, 19009 + ... + 26167.

Almost surely, 2^161707492 is an apocalyptic number.

It is an amenable number.

161707492 is a deficient number, since it is larger than the sum of its proper divisors (121370268).

161707492 is a wasteful number, since it uses less digits than its factorization.

161707492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12810 (or 12808 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 161707492 is about 12716.4260702447. The cubic root of 161707492 is about 544.8078799866.

The spelling of 161707492 in words is "one hundred sixty-one million, seven hundred seven thousand, four hundred ninety-two".