18126112388 has 12 divisors (see below), whose sum is σ = 31726131612. Its totient is φ = 9061503360.

The previous prime is 18126112349. The next prime is 18126112427. The reversal of 18126112388 is 88321162181.

It is an interprime number because it is at equal distance from previous prime (18126112349) and next prime (18126112427).

It can be written as a sum of positive squares in 2 ways, for example, as 15972409924 + 2153702464 = 126382^2 + 46408^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361745 + ... + 408792.

It is an arithmetic number, because the mean of its divisors is an integer number (2643844301).

Almost surely, 2^18126112388 is an apocalyptic number.

It is an amenable number.

18126112388 is a deficient number, since it is larger than the sum of its proper divisors (13600019224).

18126112388 is a wasteful number, since it uses less digits than its factorization.

18126112388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776422 (or 776420 counting only the distinct ones).

The product of its digits is 36864, while the sum is 41.

The spelling of 18126112388 in words is "eighteen billion, one hundred twenty-six million, one hundred twelve thousand, three hundred eighty-eight".