18553389090 has 16 divisors (see below), whose sum is σ = 44528133888. Its totient is φ = 4947570416.

The previous prime is 18553389067. The next prime is 18553389119. The reversal of 18553389090 is 9098335581.

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 7 ways as a sum of consecutive naturals, for example, 309223122 + ... + 309223181.

It is an arithmetic number, because the mean of its divisors is an integer number (2783008368).

Almost surely, 2^18553389090 is an apocalyptic number.

18553389090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18553389090 is an abundant number, since it is smaller than the sum of its proper divisors (25974744798).

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

18553389090 is a wasteful number, since it uses less digits than its factorization.

18553389090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618446313.

The product of its (nonzero) digits is 1166400, while the sum is 51.

The spelling of 18553389090 in words is "eighteen billion, five hundred fifty-three million, three hundred eighty-nine thousand, ninety".