161793168 has 20 divisors (see below), whose sum is σ = 417965808. Its totient is φ = 53931040.

The previous prime is 161793127. The next prime is 161793173. The reversal of 161793168 is 861397161.

It is a super-2 number, since 2×161793168² = 52354058422952448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1685298 + ... + 1685393.

Almost surely, 2^161793168 is an apocalyptic number.

It is an amenable number.

161793168 is an abundant number, since it is smaller than the sum of its proper divisors (256172640).

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

161793168 is a wasteful number, since it uses less digits than its factorization.

161793168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3370702 (or 3370696 counting only the distinct ones).

The product of its digits is 54432, while the sum is 42.

The square root of 161793168 is about 12719.7943379600. The cubic root of 161793168 is about 544.9040798561.

The spelling of 161793168 in words is "one hundred sixty-one million, seven hundred ninety-three thousand, one hundred sixty-eight".