18249000492 has 96 divisors (see below), whose sum is σ = 45419512320. Its totient is φ = 5689981440.

The previous prime is 18249000449. The next prime is 18249000521. The reversal of 18249000492 is 29400094281.

It is a self number, because there is not a number n which added to its sum of digits gives 18249000492.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4839984 + ... + 4843752.

It is an arithmetic number, because the mean of its divisors is an integer number (473119920).

Almost surely, 2^18249000492 is an apocalyptic number.

18249000492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18249000492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22709756160).

18249000492 is an abundant number, since it is smaller than the sum of its proper divisors (27170511828).

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

18249000492 is a wasteful number, since it uses less digits than its factorization.

18249000492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4183 (or 4181 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 18249000492 in words is "eighteen billion, two hundred forty-nine million, four hundred ninety-two", and thus it is an aban number.