18094688538 has 16 divisors (see below), whose sum is σ = 36230372256. Its totient is φ = 6024730320.

The previous prime is 18094688489. The next prime is 18094688597. The reversal of 18094688538 is 83588649081.

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, 1702393 + ... + 1712988.

It is an arithmetic number, because the mean of its divisors is an integer number (2264398266).

Almost surely, 2^18094688538 is an apocalyptic number.

18094688538 is an abundant number, since it is smaller than the sum of its proper divisors (18135683718).

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

18094688538 is a wasteful number, since it uses less digits than its factorization.

18094688538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3416269.

The product of its (nonzero) digits is 13271040, while the sum is 60.

The spelling of 18094688538 in words is "eighteen billion, ninety-four million, six hundred eighty-eight thousand, five hundred thirty-eight".