161092136 has 32 divisors (see below), whose sum is σ = 323433000. Its totient is φ = 74950656.

The previous prime is 161092133. The next prime is 161092159. The reversal of 161092136 is 631290161.

It can be written as a sum of positive squares in 4 ways, for example, as 84529636 + 76562500 = 9194^2 + 8750^2 .

It is a junction number, because it is equal to n+sod(n) for n = 161092099 and 161092108.

It is not an unprimeable number, because it can be changed into a prime (161092133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5450 + ... + 18758.

Almost surely, 2^161092136 is an apocalyptic number.

It is an amenable number.

161092136 is an abundant number, since it is smaller than the sum of its proper divisors (162340864).

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

161092136 is a wasteful number, since it uses less digits than its factorization.

161092136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13421 (or 13417 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 161092136 is about 12692.2076881841. The cubic root of 161092136 is about 544.1159372995.

The spelling of 161092136 in words is "one hundred sixty-one million, ninety-two thousand, one hundred thirty-six".