161086923 has 12 divisors (see below), whose sum is σ = 233969008. Its totient is φ = 106796880.

The previous prime is 161086897. The next prime is 161086931. The reversal of 161086923 is 329680161.

It is not a de Polignac number, because 161086923 - 2¹² = 161082827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161086973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47815 + ... + 51072.

Almost surely, 2^161086923 is an apocalyptic number.

161086923 is a deficient number, since it is larger than the sum of its proper divisors (72882085).

161086923 is a wasteful number, since it uses less digits than its factorization.

161086923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99074 (or 99071 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 161086923 is about 12692.0023242986. The cubic root of 161086923 is about 544.1100679731.

The spelling of 161086923 in words is "one hundred sixty-one million, eighty-six thousand, nine hundred twenty-three".