18138710899 has 8 divisors (see below), whose sum is σ = 18261900800. Its totient is φ = 18015841800.

The previous prime is 18138710879. The next prime is 18138710923. The reversal of 18138710899 is 99801783181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18138710899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18138710839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33814 + ... + 193444.

It is an arithmetic number, because the mean of its divisors is an integer number (2282737600).

Almost surely, 2^18138710899 is an apocalyptic number.

18138710899 is a deficient number, since it is larger than the sum of its proper divisors (123189901).

18138710899 is a wasteful number, since it uses less digits than its factorization.

18138710899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160401.

The product of its (nonzero) digits is 870912, while the sum is 55.

The spelling of 18138710899 in words is "eighteen billion, one hundred thirty-eight million, seven hundred ten thousand, eight hundred ninety-nine".