18549112892 has 12 divisors (see below), whose sum is σ = 32525485776. Its totient is φ = 9256116960.

The previous prime is 18549112873. The next prime is 18549112909. The reversal of 18549112892 is 29821194581.

It is a self number, because there is not a number n which added to its sum of digits gives 18549112892.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4607609 + ... + 4611632.

It is an arithmetic number, because the mean of its divisors is an integer number (2710457148).

Almost surely, 2^18549112892 is an apocalyptic number.

It is an amenable number.

18549112892 is a deficient number, since it is larger than the sum of its proper divisors (13976372884).

18549112892 is a wasteful number, since it uses less digits than its factorization.

18549112892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9219748 (or 9219746 counting only the distinct ones).

The product of its digits is 414720, while the sum is 50.

The spelling of 18549112892 in words is "eighteen billion, five hundred forty-nine million, one hundred twelve thousand, eight hundred ninety-two".