18950980 has 24 divisors (see below), whose sum is σ = 41892480. Its totient is φ = 7181280.

The previous prime is 18950963. The next prime is 18950989. The reversal of 18950980 is 8905981.

It is not an unprimeable number, because it can be changed into a prime (18950989) 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, 24556 + ... + 25315.

It is an arithmetic number, because the mean of its divisors is an integer number (1745520).

Almost surely, 2^18950980 is an apocalyptic number.

18950980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18950980 is an abundant number, since it is smaller than the sum of its proper divisors (22941500).

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

18950980 is a wasteful number, since it uses less digits than its factorization.

18950980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49899 (or 49897 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 18950980 is about 4353.2723323955. The cubic root of 18950980 is about 266.6104846921.

The spelling of 18950980 in words is "eighteen million, nine hundred fifty thousand, nine hundred eighty".