18418282128 has 60 divisors (see below), whose sum is σ = 51729158988. Its totient is φ = 6117565440.

The previous prime is 18418282117. The next prime is 18418282139. The reversal of 18418282128 is 82128281481.

18418282128 is a `hidden beast` number, since 18 + 418 + 2 + 8 + 212 + 8 = 666.

18418282128 is nontrivially palindromic in base 5.

It is an interprime number because it is at equal distance from previous prime (18418282117) and next prime (18418282139).

It can be written as a sum of positive squares in 2 ways, for example, as 11263152384 + 7155129744 = 106128^2 + 84588^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187125 + ... + 268052.

Almost surely, 2^18418282128 is an apocalyptic number.

18418282128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18418282128 is an abundant number, since it is smaller than the sum of its proper divisors (33310876860).

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

18418282128 is a wasteful number, since it uses less digits than its factorization.

18418282128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455472 (or 455463 counting only the distinct ones).

The product of its digits is 131072, while the sum is 45.

The spelling of 18418282128 in words is "eighteen billion, four hundred eighteen million, two hundred eighty-two thousand, one hundred twenty-eight".