161883132 has 24 divisors (see below), whose sum is σ = 386512896. Its totient is φ = 52705968.

The previous prime is 161883109. The next prime is 161883157. The reversal of 161883132 is 231388161.

It is a super-2 number, since 2×161883132² = 52412296852258848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161883093 and 161883102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156348 + ... + 157379.

It is an arithmetic number, because the mean of its divisors is an integer number (16104704).

Almost surely, 2^161883132 is an apocalyptic number.

161883132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161883132 is an abundant number, since it is smaller than the sum of its proper divisors (224629764).

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

161883132 is a wasteful number, since it uses less digits than its factorization.

161883132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313777 (or 313775 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 161883132 is about 12723.3302244342. The cubic root of 161883132 is about 545.0050578887.

The spelling of 161883132 in words is "one hundred sixty-one million, eight hundred eighty-three thousand, one hundred thirty-two".