18818682514 has 16 divisors (see below), whose sum is σ = 28339863768. Its totient is φ = 9372085632.

The previous prime is 18818682503. The next prime is 18818682521. The reversal of 18818682514 is 41528681881.

It can be written as a sum of positive squares in 4 ways, for example, as 14744030625 + 4074651889 = 121425^2 + 63833^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2618494 + ... + 2625670.

Almost surely, 2^18818682514 is an apocalyptic number.

18818682514 is a deficient number, since it is larger than the sum of its proper divisors (9521181254).

18818682514 is a wasteful number, since it uses less digits than its factorization.

18818682514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12189.

The product of its digits is 983040, while the sum is 52.

The spelling of 18818682514 in words is "eighteen billion, eight hundred eighteen million, six hundred eighty-two thousand, five hundred fourteen".