161326784 has 28 divisors (see below), whose sum is σ = 334054704. Its totient is φ = 77155584.

The previous prime is 161326757. The next prime is 161326817. The reversal of 161326784 is 487623161.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53327 + ... + 56270.

Almost surely, 2^161326784 is an apocalyptic number.

It is an amenable number.

161326784 is an abundant number, since it is smaller than the sum of its proper divisors (172727920).

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

161326784 is a wasteful number, since it uses less digits than its factorization.

161326784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109632 (or 109622 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 161326784 is about 12701.4481064168. The cubic root of 161326784 is about 544.3799969004.

The spelling of 161326784 in words is "one hundred sixty-one million, three hundred twenty-six thousand, seven hundred eighty-four".