183872161 has 8 divisors (see below), whose sum is σ = 200695104. Its totient is φ = 167067120.

The previous prime is 183872147. The next prime is 183872173. The reversal of 183872161 is 161278381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 183872161 - 2⁷ = 183872033 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 183872161.

It is not an unprimeable number, because it can be changed into a prime (183872761) 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, 26155 + ... + 32431.

It is an arithmetic number, because the mean of its divisors is an integer number (25086888).

Almost surely, 2^183872161 is an apocalyptic number.

183872161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

183872161 is a deficient number, since it is larger than the sum of its proper divisors (16822943).

183872161 is a wasteful number, since it uses less digits than its factorization.

183872161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8951.

The product of its digits is 16128, while the sum is 37.

The square root of 183872161 is about 13559.9469394242. The cubic root of 183872161 is about 568.6416418615.

The spelling of 183872161 in words is "one hundred eighty-three million, eight hundred seventy-two thousand, one hundred sixty-one".