18287278282 has 32 divisors (see below), whose sum is σ = 34167917952. Its totient is φ = 7147358784.

The previous prime is 18287278279. The next prime is 18287278297. The reversal of 18287278282 is 28287278281.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 590193 + ... + 620404.

It is an arithmetic number, because the mean of its divisors is an integer number (1067747436).

Almost surely, 2^18287278282 is an apocalyptic number.

18287278282 is a deficient number, since it is larger than the sum of its proper divisors (15880639670).

18287278282 is a wasteful number, since it uses less digits than its factorization.

18287278282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210702.

The product of its digits is 3211264, while the sum is 55.

Subtracting 18287278282 from its reverse (28287278281), we obtain a palindrome (9999999999).

The spelling of 18287278282 in words is "eighteen billion, two hundred eighty-seven million, two hundred seventy-eight thousand, two hundred eighty-two".