18157935894422 has 32 divisors (see below), whose sum is σ = 28241652857088. Its totient is φ = 8746704000000.

The previous prime is 18157935894421. The next prime is 18157935894443. The reversal of 18157935894422 is 22449853975181.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18157935894421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44638472 + ... + 45043412.

It is an arithmetic number, because the mean of its divisors is an integer number (882551651784).

Almost surely, 2^{18157935894422} is an apocalyptic number.

18157935894422 is a deficient number, since it is larger than the sum of its proper divisors (10083716962666).

18157935894422 is a wasteful number, since it uses less digits than its factorization.

18157935894422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408216.

The product of its digits is 174182400, while the sum is 68.

The spelling of 18157935894422 in words is "eighteen trillion, one hundred fifty-seven billion, nine hundred thirty-five million, eight hundred ninety-four thousand, four hundred twenty-two".