18452681738 has 16 divisors (see below), whose sum is σ = 28575214080. Its totient is φ = 8927679600.

The previous prime is 18452681717. The next prime is 18452681777. The reversal of 18452681738 is 83718625481.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18452681738.

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, 991523 + ... + 1009961.

It is an arithmetic number, because the mean of its divisors is an integer number (1785950880).

Almost surely, 2^18452681738 is an apocalyptic number.

18452681738 is a deficient number, since it is larger than the sum of its proper divisors (10122532342).

18452681738 is a wasteful number, since it uses less digits than its factorization.

18452681738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34613.

The product of its digits is 2580480, while the sum is 53.

The spelling of 18452681738 in words is "eighteen billion, four hundred fifty-two million, six hundred eighty-one thousand, seven hundred thirty-eight".