183087961 has 9 divisors (see below), whose sum is σ = 213090111. Its totient is φ = 156851352.

The previous prime is 183087929. The next prime is 183087967. The reversal of 183087961 is 169780381.

The square root of 183087961 is 13531.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 124657225 + 58430736 = 11165^2 + 7644^2 .

It is not a de Polignac number, because 183087961 - 2⁵ = 183087929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (183087967) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 93751 + ... + 95683.

It is an arithmetic number, because the mean of its divisors is an integer number (23676679).

Almost surely, 2^183087961 is an apocalyptic number.

183087961 is the 13531-st square number.

183087961 is the 6766-th centered octagonal number.

It is an amenable number.

183087961 is a deficient number, since it is larger than the sum of its proper divisors (30002150).

183087961 is an frugal number, since it uses more digits than its factorization.

183087961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3880 (or 1940 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The cubic root of 183087961 is about 567.8320862267.

The spelling of 183087961 in words is "one hundred eighty-three million, eighty-seven thousand, nine hundred sixty-one".