161793772 has 12 divisors (see below), whose sum is σ = 323587600. Its totient is φ = 69340176.

The previous prime is 161793727. The next prime is 161793773. The reversal of 161793772 is 277397161.

161793772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

161793772 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (161793773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2889147 + ... + 2889202.

Almost surely, 2^161793772 is an apocalyptic number.

It is an amenable number.

161793772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

161793772 is a wasteful number, since it uses less digits than its factorization.

161793772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5778360 (or 5778358 counting only the distinct ones).

The product of its digits is 111132, while the sum is 43.

The square root of 161793772 is about 12719.8180804601. The cubic root of 161793772 is about 544.9047579269.

The spelling of 161793772 in words is "one hundred sixty-one million, seven hundred ninety-three thousand, seven hundred seventy-two".