18206074917659 has 16 divisors (see below), whose sum is σ = 18643568332032. Its totient is φ = 17772263303808.

The previous prime is 18206074917629. The next prime is 18206074917661. The reversal of 18206074917659 is 95671947060281.

It is a cyclic number.

It is not a de Polignac number, because 18206074917659 - 2²⁰ = 18206073869083 is a prime.

It is a super-2 number, since 2×18206074917659² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18206074917595 and 18206074917604.

It is not an unprimeable number, because it can be changed into a prime (18206074917629) 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, 8460377 + ... + 10391829.

It is an arithmetic number, because the mean of its divisors is an integer number (1165223020752).

Almost surely, 2^{18206074917659} is an apocalyptic number.

18206074917659 is a deficient number, since it is larger than the sum of its proper divisors (437493414373).

18206074917659 is a wasteful number, since it uses less digits than its factorization.

18206074917659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932406.

The product of its (nonzero) digits is 45722880, while the sum is 65.

The spelling of 18206074917659 in words is "eighteen trillion, two hundred six billion, seventy-four million, nine hundred seventeen thousand, six hundred fifty-nine".