161193796 has 72 divisors (see below), whose sum is σ = 324928800. Its totient is φ = 69719040.

The previous prime is 161193763. The next prime is 161193811. The reversal of 161193796 is 697391161.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 900435 + ... + 900613.

It is an arithmetic number, because the mean of its divisors is an integer number (4512900).

Almost surely, 2^161193796 is an apocalyptic number.

It is an amenable number.

161193796 is an abundant number, since it is smaller than the sum of its proper divisors (163735004).

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

161193796 is a wasteful number, since it uses less digits than its factorization.

161193796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 258 counting only the distinct ones).

The product of its digits is 61236, while the sum is 43.

The square root of 161193796 is about 12696.2118759888. The cubic root of 161193796 is about 544.2303711795.

The spelling of 161193796 in words is "one hundred sixty-one million, one hundred ninety-three thousand, seven hundred ninety-six".