18159279658 has 64 divisors (see below), whose sum is σ = 30191616000. Its totient is φ = 8141176512.

The previous prime is 18159279643. The next prime is 18159279667. The reversal of 18159279658 is 85697295181.

It is a junction number, because it is equal to n+sod(n) for n = 18159279596 and 18159279605.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36391093 + ... + 36391591.

It is an arithmetic number, because the mean of its divisors is an integer number (471744000).

Almost surely, 2^18159279658 is an apocalyptic number.

18159279658 is a deficient number, since it is larger than the sum of its proper divisors (12032336342).

18159279658 is a wasteful number, since it uses less digits than its factorization.

18159279658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851.

The product of its digits is 10886400, while the sum is 61.

The spelling of 18159279658 in words is "eighteen billion, one hundred fifty-nine million, two hundred seventy-nine thousand, six hundred fifty-eight".