18154968354 has 48 divisors (see below), whose sum is σ = 39978357120. Its totient is φ = 5953353120.

The previous prime is 18154968353. The next prime is 18154968367. The reversal of 18154968354 is 45386945181.

It is a happy number.

18154968354 is a `hidden beast` number, since 1 + 8 + 1 + 549 + 68 + 35 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18154968354.

It is not an unprimeable number, because it can be changed into a prime (18154968353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 370849 + ... + 416939.

It is an arithmetic number, because the mean of its divisors is an integer number (832882440).

Almost surely, 2^18154968354 is an apocalyptic number.

18154968354 is an abundant number, since it is smaller than the sum of its proper divisors (21823388766).

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

18154968354 is a wasteful number, since it uses less digits than its factorization.

18154968354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46455 (or 46452 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The spelling of 18154968354 in words is "eighteen billion, one hundred fifty-four million, nine hundred sixty-eight thousand, three hundred fifty-four".