161873284 has 24 divisors (see below), whose sum is σ = 288041600. Its totient is φ = 79587360.

The previous prime is 161873281. The next prime is 161873297. The reversal of 161873284 is 482378161.

It is not an unprimeable number, because it can be changed into a prime (161873281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59269 + ... + 61939.

Almost surely, 2^161873284 is an apocalyptic number.

It is an amenable number.

161873284 is a deficient number, since it is larger than the sum of its proper divisors (126168316).

161873284 is a wasteful number, since it uses less digits than its factorization.

161873284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923 (or 2921 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 161873284 is about 12722.9432129519. The cubic root of 161873284 is about 544.9940060503.

The spelling of 161873284 in words is "one hundred sixty-one million, eight hundred seventy-three thousand, two hundred eighty-four".