18062499668 has 12 divisors (see below), whose sum is σ = 31628462292. Its totient is φ = 9025796160.

The previous prime is 18062499659. The next prime is 18062499703. The reversal of 18062499668 is 86699426081.

It can be written as a sum of positive squares in 2 ways, for example, as 11819603524 + 6242896144 = 108718^2 + 79012^2 .

It is a super-2 number, since 2×18062499668² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1355963 + ... + 1369218.

It is an arithmetic number, because the mean of its divisors is an integer number (2635705191).

Almost surely, 2^18062499668 is an apocalyptic number.

It is an amenable number.

18062499668 is a deficient number, since it is larger than the sum of its proper divisors (13565962624).

18062499668 is a wasteful number, since it uses less digits than its factorization.

18062499668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726842 (or 2726840 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 59.

The spelling of 18062499668 in words is "eighteen billion, sixty-two million, four hundred ninety-nine thousand, six hundred sixty-eight".