18820037460 has 48 divisors (see below), whose sum is σ = 60224121216. Its totient is φ = 4301722752.

The previous prime is 18820037447. The next prime is 18820037471. The reversal of 18820037460 is 6473002881.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22404387 + ... + 22405226.

It is an arithmetic number, because the mean of its divisors is an integer number (1254669192).

Almost surely, 2^18820037460 is an apocalyptic number.

18820037460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18820037460 is an abundant number, since it is smaller than the sum of its proper divisors (41404083756).

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

18820037460 is a wasteful number, since it uses less digits than its factorization.

18820037460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44809632 (or 44809630 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 18820037460 in words is "eighteen billion, eight hundred twenty million, thirty-seven thousand, four hundred sixty".