18344860 has 12 divisors (see below), whose sum is σ = 38524248. Its totient is φ = 7337936.

The previous prime is 18344831. The next prime is 18344863. The reversal of 18344860 is 6844381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18344863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458602 + ... + 458641.

It is an arithmetic number, because the mean of its divisors is an integer number (3210354).

Almost surely, 2^18344860 is an apocalyptic number.

18344860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18344860 is an abundant number, since it is smaller than the sum of its proper divisors (20179388).

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

18344860 is a wasteful number, since it uses less digits than its factorization.

18344860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917252 (or 917250 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 18344860 is about 4283.0900060587. The cubic root of 18344860 is about 263.7372462256.

The spelling of 18344860 in words is "eighteen million, three hundred forty-four thousand, eight hundred sixty".