18702018420 has 48 divisors (see below), whose sum is σ = 52398467520. Its totient is φ = 4984079616.

The previous prime is 18702018407. The next prime is 18702018437. The reversal of 18702018420 is 2481020781.

It is a happy number.

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, 322 + ... + 193401.

It is an arithmetic number, because the mean of its divisors is an integer number (1091634740).

Almost surely, 2^18702018420 is an apocalyptic number.

18702018420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18702018420 is an abundant number, since it is smaller than the sum of its proper divisors (33696449100).

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

18702018420 is a wasteful number, since it uses less digits than its factorization.

18702018420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195344 (or 195342 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The spelling of 18702018420 in words is "eighteen billion, seven hundred two million, eighteen thousand, four hundred twenty".