183985140 has 48 divisors (see below), whose sum is σ = 522426240. Its totient is φ = 48370560.

The previous prime is 183985111. The next prime is 183985181. The reversal of 183985140 is 41589381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17335 + ... + 25854.

It is an arithmetic number, because the mean of its divisors is an integer number (10883880).

Almost surely, 2^183985140 is an apocalyptic number.

183985140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

183985140 is an abundant number, since it is smaller than the sum of its proper divisors (338441100).

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

183985140 is a wasteful number, since it uses less digits than its factorization.

183985140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43272 (or 43270 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 183985140 is about 13564.1122083238. The cubic root of 183985140 is about 568.7580840134.

The spelling of 183985140 in words is "one hundred eighty-three million, nine hundred eighty-five thousand, one hundred forty".