161872468 has 12 divisors (see below), whose sum is σ = 289864960. Its totient is φ = 79053912.

The previous prime is 161872433. The next prime is 161872471. The reversal of 161872468 is 864278161.

It is a super-2 number, since 2×161872468² = 52405391792822048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

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, 470388 + ... + 470731.

Almost surely, 2^161872468 is an apocalyptic number.

It is an amenable number.

161872468 is a deficient number, since it is larger than the sum of its proper divisors (127992492).

161872468 is a wasteful number, since it uses less digits than its factorization.

161872468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941166 (or 941164 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 161872468 is about 12722.9111448599. The cubic root of 161872468 is about 544.9930902808.

The spelling of 161872468 in words is "one hundred sixty-one million, eight hundred seventy-two thousand, four hundred sixty-eight".