18260808068 has 6 divisors (see below), whose sum is σ = 31956414126. Its totient is φ = 9130404032.

The previous prime is 18260808047. The next prime is 18260808079. The reversal of 18260808068 is 86080806281.

It can be written as a sum of positive squares in only one way, i.e., 18105855364 + 154952704 = 134558^2 + 12448^2 .

It is a super-2 number, since 2×18260808068² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2282601005 + ... + 2282601012.

It is an arithmetic number, because the mean of its divisors is an integer number (5326069021).

Almost surely, 2^18260808068 is an apocalyptic number.

It is an amenable number.

18260808068 is a deficient number, since it is larger than the sum of its proper divisors (13695606058).

18260808068 is a wasteful number, since it uses less digits than its factorization.

18260808068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4565202021 (or 4565202019 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 47.

The spelling of 18260808068 in words is "eighteen billion, two hundred sixty million, eight hundred eight thousand, sixty-eight".