18049147318854 has 24 divisors (see below), whose sum is σ = 39601504668960. Its totient is φ = 5940225699408.

The previous prime is 18049147318847. The next prime is 18049147318877. The reversal of 18049147318854 is 45881374194081.

18049147318854 is a `hidden beast` number, since 1 + 80 + 4 + 9 + 1 + 473 + 1 + 8 + 85 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 18049147318791 and 18049147318800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6346393557 + ... + 6346396400.

It is an arithmetic number, because the mean of its divisors is an integer number (1650062694540).

Almost surely, 2^{18049147318854} is an apocalyptic number.

18049147318854 is an abundant number, since it is smaller than the sum of its proper divisors (21552357350106).

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

18049147318854 is a wasteful number, since it uses less digits than its factorization.

18049147318854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12692790044 (or 12692790041 counting only the distinct ones).

The product of its (nonzero) digits is 30965760, while the sum is 63.

The spelling of 18049147318854 in words is "eighteen trillion, forty-nine billion, one hundred forty-seven million, three hundred eighteen thousand, eight hundred fifty-four".