18342086905 has 12 divisors (see below), whose sum is σ = 23229925092. Its totient is φ = 13901369760.

The previous prime is 18342086857. The next prime is 18342086933. The reversal of 18342086905 is 50968024381.

It can be written as a sum of positive squares in 2 ways, for example, as 9881950464 + 8460136441 = 99408^2 + 91979^2 .

It is a de Polignac number, because none of the positive numbers 2^k-18342086905 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5079106 + ... + 5082715.

It is an arithmetic number, because the mean of its divisors is an integer number (1935827091).

Almost surely, 2^18342086905 is an apocalyptic number.

It is an amenable number.

18342086905 is a deficient number, since it is larger than the sum of its proper divisors (4887838187).

18342086905 is a wasteful number, since it uses less digits than its factorization.

18342086905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10161864 (or 10161845 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 18342086905 in words is "eighteen billion, three hundred forty-two million, eighty-six thousand, nine hundred five".