18383711420 has 12 divisors (see below), whose sum is σ = 38605794024. Its totient is φ = 7353484560.

The previous prime is 18383711329. The next prime is 18383711429. The reversal of 18383711420 is 2411738381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18383711429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459592766 + ... + 459592805.

It is an arithmetic number, because the mean of its divisors is an integer number (3217149502).

Almost surely, 2^18383711420 is an apocalyptic number.

18383711420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18383711420 is an abundant number, since it is smaller than the sum of its proper divisors (20222082604).

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

18383711420 is a wasteful number, since it uses less digits than its factorization.

18383711420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919185580 (or 919185578 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 18383711420 in words is "eighteen billion, three hundred eighty-three million, seven hundred eleven thousand, four hundred twenty".