183216816 has 50 divisors (see below), whose sum is σ = 530286372. Its totient is φ = 61071840.

The previous prime is 183216739. The next prime is 183216821. The reversal of 183216816 is 618612381.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 69390 + ... + 71981.

Almost surely, 2^183216816 is an apocalyptic number.

183216816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

183216816 is an abundant number, since it is smaller than the sum of its proper divisors (347069556).

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

183216816 is a wasteful number, since it uses less digits than its factorization.

183216816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141391 (or 141376 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 183216816 is about 13535.7606361815. The cubic root of 183216816 is about 567.9652660106.

The spelling of 183216816 in words is "one hundred eighty-three million, two hundred sixteen thousand, eight hundred sixteen".