18200485138 has 16 divisors (see below), whose sum is σ = 29996880480. Its totient is φ = 8213428800.

The previous prime is 18200485033. The next prime is 18200485151. The reversal of 18200485138 is 83158400281.

It is a self number, because there is not a number n which added to its sum of digits gives 18200485138.

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 7 ways as a sum of consecutive naturals, for example, 2972823 + ... + 2978938.

It is an arithmetic number, because the mean of its divisors is an integer number (1874805030).

Almost surely, 2^18200485138 is an apocalyptic number.

18200485138 is a deficient number, since it is larger than the sum of its proper divisors (11796395342).

18200485138 is a wasteful number, since it uses less digits than its factorization.

18200485138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5951913.

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 18200485138 in words is "eighteen billion, two hundred million, four hundred eighty-five thousand, one hundred thirty-eight".