18385517062 has 12 divisors (see below), whose sum is σ = 30313311588. Its totient is φ = 8357053100.

The previous prime is 18385516997. The next prime is 18385517093. The reversal of 18385517062 is 26071558381.

It is a super-2 number, since 2×18385517062² (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 (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37986364 + ... + 37986847.

It is an arithmetic number, because the mean of its divisors is an integer number (2526109299).

Almost surely, 2^18385517062 is an apocalyptic number.

18385517062 is a deficient number, since it is larger than the sum of its proper divisors (11927794526).

18385517062 is a wasteful number, since it uses less digits than its factorization.

18385517062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75973235 (or 75973224 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 18385517062 in words is "eighteen billion, three hundred eighty-five million, five hundred seventeen thousand, sixty-two".