18249019590 has 16 divisors (see below), whose sum is σ = 43797647088. Its totient is φ = 4866405216.

The previous prime is 18249019531. The next prime is 18249019669. The reversal of 18249019590 is 9591094281.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304150297 + ... + 304150356.

It is an arithmetic number, because the mean of its divisors is an integer number (2737352943).

Almost surely, 2^18249019590 is an apocalyptic number.

18249019590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18249019590 is an abundant number, since it is smaller than the sum of its proper divisors (25548627498).

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

18249019590 is a wasteful number, since it uses less digits than its factorization.

18249019590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608300663.

The product of its (nonzero) digits is 233280, while the sum is 48.

The spelling of 18249019590 in words is "eighteen billion, two hundred forty-nine million, nineteen thousand, five hundred ninety".