18027289834 has 16 divisors (see below), whose sum is σ = 27114669000. Its totient is φ = 8989087744.

The previous prime is 18027289783. The next prime is 18027289859. The reversal of 18027289834 is 43898272081.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17583555609 + 443734225 = 132603^2 + 21065^2 .

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, 2490132 + ... + 2497360.

Almost surely, 2^18027289834 is an apocalyptic number.

18027289834 is a deficient number, since it is larger than the sum of its proper divisors (9087379166).

18027289834 is a wasteful number, since it uses less digits than its factorization.

18027289834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10457.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 18027289834 in words is "eighteen billion, twenty-seven million, two hundred eighty-nine thousand, eight hundred thirty-four".