161834572 has 12 divisors (see below), whose sum is σ = 283548496. Its totient is φ = 80820720.

The previous prime is 161834567. The next prime is 161834573. The reversal of 161834572 is 275438161.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (161834573) by changing a digit.

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, 20304 + ... + 27127.

Almost surely, 2^161834572 is an apocalyptic number.

It is an amenable number.

161834572 is a deficient number, since it is larger than the sum of its proper divisors (121713924).

161834572 is a wasteful number, since it uses less digits than its factorization.

161834572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48288 (or 48286 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 161834572 is about 12721.4217758865. The cubic root of 161834572 is about 544.9505574764.

The spelling of 161834572 in words is "one hundred sixty-one million, eight hundred thirty-four thousand, five hundred seventy-two".