18769980 has 48 divisors (see below), whose sum is σ = 52778880. Its totient is φ = 4984128.

The previous prime is 18769969. The next prime is 18769991. The reversal of 18769980 is 8996781.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18769969) and next prime (18769991).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17911 + ... + 18929.

It is an arithmetic number, because the mean of its divisors is an integer number (1099560).

Almost surely, 2^18769980 is an apocalyptic number.

18769980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18769980 is an abundant number, since it is smaller than the sum of its proper divisors (34008900).

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

18769980 is a wasteful number, since it uses less digits than its factorization.

18769980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338 (or 1336 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 18769980 is about 4332.4334963159. The cubic root of 18769980 is about 265.7589728783.

The spelling of 18769980 in words is "eighteen million, seven hundred sixty-nine thousand, nine hundred eighty".