18113501284 has 24 divisors (see below), whose sum is σ = 32338164600. Its totient is φ = 8875130880.

The previous prime is 18113501281. The next prime is 18113501303. The reversal of 18113501284 is 48210531181.

It can be written as a sum of positive squares in 4 ways, for example, as 2219352100 + 15894149184 = 47110^2 + 126072^2 .

It is not an unprimeable number, because it can be changed into a prime (18113501281) 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, 72349 + ... + 203620.

It is an arithmetic number, because the mean of its divisors is an integer number (1347423525).

Almost surely, 2^18113501284 is an apocalyptic number.

It is an amenable number.

18113501284 is a deficient number, since it is larger than the sum of its proper divisors (14224663316).

18113501284 is a wasteful number, since it uses less digits than its factorization.

18113501284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276303 (or 276301 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 34.

The spelling of 18113501284 in words is "eighteen billion, one hundred thirteen million, five hundred one thousand, two hundred eighty-four".