18205985182 has 32 divisors (see below), whose sum is σ = 34742419200. Its totient is φ = 7093238040.

The previous prime is 18205985143. The next prime is 18205985191. The reversal of 18205985182 is 28158950281.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1198788 + ... + 1213879.

It is an arithmetic number, because the mean of its divisors is an integer number (1085700600).

Almost surely, 2^18205985182 is an apocalyptic number.

18205985182 is a deficient number, since it is larger than the sum of its proper divisors (16536434018).

18205985182 is a wasteful number, since it uses less digits than its factorization.

18205985182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2412701 (or 2412687 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 49.

The spelling of 18205985182 in words is "eighteen billion, two hundred five million, nine hundred eighty-five thousand, one hundred eighty-two".