18105998371 has 8 divisors (see below), whose sum is σ = 18145994688. Its totient is φ = 18066048000.

The previous prime is 18105998363. The next prime is 18105998401. The reversal of 18105998371 is 17389950181.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18105998371 - 2³ = 18105998363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18105996371) 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, 846691 + ... + 867811.

It is an arithmetic number, because the mean of its divisors is an integer number (2268249336).

Almost surely, 2^18105998371 is an apocalyptic number.

18105998371 is a deficient number, since it is larger than the sum of its proper divisors (39996317).

18105998371 is an equidigital number, since it uses as much as digits as its factorization.

18105998371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22973.

The product of its (nonzero) digits is 544320, while the sum is 52.

The spelling of 18105998371 in words is "eighteen billion, one hundred five million, nine hundred ninety-eight thousand, three hundred seventy-one".