18013913420 has 12 divisors (see below), whose sum is σ = 37829218224. Its totient is φ = 7205565360.

The previous prime is 18013913399. The next prime is 18013913429. The reversal of 18013913420 is 2431931081.

It is not an unprimeable number, because it can be changed into a prime (18013913429) 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, 450347816 + ... + 450347855.

It is an arithmetic number, because the mean of its divisors is an integer number (3152434852).

Almost surely, 2^18013913420 is an apocalyptic number.

18013913420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18013913420 is an abundant number, since it is smaller than the sum of its proper divisors (19815304804).

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

18013913420 is a wasteful number, since it uses less digits than its factorization.

18013913420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900695680 (or 900695678 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 18013913420 in words is "eighteen billion, thirteen million, nine hundred thirteen thousand, four hundred twenty".