18028942120 has 32 divisors (see below), whose sum is σ = 46360137600. Its totient is φ = 6181351488.

The previous prime is 18028942049. The next prime is 18028942123. The reversal of 18028942120 is 2124982081.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18028942120.

It is not an unprimeable number, because it can be changed into a prime (18028942123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32194260 + ... + 32194819.

It is an arithmetic number, because the mean of its divisors is an integer number (1448754300).

Almost surely, 2^18028942120 is an apocalyptic number.

18028942120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18028942120 is an abundant number, since it is smaller than the sum of its proper divisors (28331195480).

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

18028942120 is a wasteful number, since it uses less digits than its factorization.

18028942120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64389097 (or 64389093 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The spelling of 18028942120 in words is "eighteen billion, twenty-eight million, nine hundred forty-two thousand, one hundred twenty".