18036038220 has 96 divisors (see below), whose sum is σ = 50880910080. Its totient is φ = 4773530880.

The previous prime is 18036038219. The next prime is 18036038221. The reversal of 18036038220 is 2283063081.

It is an interprime number because it is at equal distance from previous prime (18036038219) and next prime (18036038221).

It is not an unprimeable number, because it can be changed into a prime (18036038221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6720999 + ... + 6723681.

It is an arithmetic number, because the mean of its divisors is an integer number (530009480).

Almost surely, 2^18036038220 is an apocalyptic number.

18036038220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18036038220 is an abundant number, since it is smaller than the sum of its proper divisors (32844871860).

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

18036038220 is a wasteful number, since it uses less digits than its factorization.

18036038220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495 (or 3493 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The spelling of 18036038220 in words is "eighteen billion, thirty-six million, thirty-eight thousand, two hundred twenty".