18740980 has 12 divisors (see below), whose sum is σ = 39356100. Its totient is φ = 7496384.

The previous prime is 18740941. The next prime is 18740993. The reversal of 18740980 is 8904781.

It can be written as a sum of positive squares in 2 ways, for example, as 14915044 + 3825936 = 3862^2 + 1956^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468505 + ... + 468544.

It is an arithmetic number, because the mean of its divisors is an integer number (3279675).

Almost surely, 2^18740980 is an apocalyptic number.

18740980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18740980 is an abundant number, since it is smaller than the sum of its proper divisors (20615120).

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

18740980 is a wasteful number, since it uses less digits than its factorization.

18740980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937058 (or 937056 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 18740980 is about 4329.0853537439. The cubic root of 18740980 is about 265.6220346612.

It can be divided in two parts, 187409 and 80, that added together give a square (187489 = 433²).

The spelling of 18740980 in words is "eighteen million, seven hundred forty thousand, nine hundred eighty".