18467980 has 12 divisors (see below), whose sum is σ = 38782800. Its totient is φ = 7387184.

The previous prime is 18467963. The next prime is 18467989. The reversal of 18467980 is 8976481.

It is not an unprimeable number, because it can be changed into a prime (18467989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461680 + ... + 461719.

It is an arithmetic number, because the mean of its divisors is an integer number (3231900).

Almost surely, 2^18467980 is an apocalyptic number.

18467980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18467980 is an abundant number, since it is smaller than the sum of its proper divisors (20314820).

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

18467980 is a wasteful number, since it uses less digits than its factorization.

18467980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923408 (or 923406 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 18467980 is about 4297.4387721060. The cubic root of 18467980 is about 264.3259480296.

The spelling of 18467980 in words is "eighteen million, four hundred sixty-seven thousand, nine hundred eighty".