18009346554 has 12 divisors (see below), whose sum is σ = 39020250906. Its totient is φ = 6003115512.

The previous prime is 18009346543. The next prime is 18009346573. The reversal of 18009346554 is 45564390081.

18009346554 is a `hidden beast` number, since 1 + 8 + 0 + 0 + 93 + 4 + 6 + 554 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13826232225 + 4183114329 = 117585^2 + 64677^2 .

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 5 ways as a sum of consecutive naturals, for example, 500259609 + ... + 500259644.

Almost surely, 2^18009346554 is an apocalyptic number.

18009346554 is an abundant number, since it is smaller than the sum of its proper divisors (21010904352).

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

18009346554 is a wasteful number, since it uses less digits than its factorization.

18009346554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000519261 (or 1000519258 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 18009346554 in words is "eighteen billion, nine million, three hundred forty-six thousand, five hundred fifty-four".