18245980 has 24 divisors (see below), whose sum is σ = 39553920. Its totient is φ = 7062720.

The previous prime is 18245957. The next prime is 18245987. The reversal of 18245980 is 8954281.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18245987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14095 + ... + 15334.

It is an arithmetic number, because the mean of its divisors is an integer number (1648080).

Almost surely, 2^18245980 is an apocalyptic number.

18245980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18245980 is an abundant number, since it is smaller than the sum of its proper divisors (21307940).

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

18245980 is a wasteful number, since it uses less digits than its factorization.

18245980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29469 (or 29467 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 18245980 is about 4271.5313413342. The cubic root of 18245980 is about 263.2625386078.

The spelling of 18245980 in words is "eighteen million, two hundred forty-five thousand, nine hundred eighty".