18081518684 has 12 divisors (see below), whose sum is σ = 31643732400. Its totient is φ = 9040452288.

The previous prime is 18081518683. The next prime is 18081518687. The reversal of 18081518684 is 48681518081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18081518683) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 101972 + ... + 215780.

It is an arithmetic number, because the mean of its divisors is an integer number (2636977700).

Almost surely, 2^18081518684 is an apocalyptic number.

It is an amenable number.

18081518684 is a deficient number, since it is larger than the sum of its proper divisors (13562213716).

18081518684 is a wasteful number, since it uses less digits than its factorization.

18081518684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153532 (or 153530 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 50.

The spelling of 18081518684 in words is "eighteen billion, eighty-one million, five hundred eighteen thousand, six hundred eighty-four".