18585935860 has 48 divisors (see below), whose sum is σ = 40830123600. Its totient is φ = 7097345024.

The previous prime is 18585935807. The next prime is 18585935873. The reversal of 18585935860 is 6853958581.

It can be written as a sum of positive squares in 8 ways, for example, as 93199716 + 18492736144 = 9654^2 + 135988^2 .

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a junction number, because it is equal to n+sod(n) for n = 18585935795 and 18585935804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128407 + ... + 231646.

It is an arithmetic number, because the mean of its divisors is an integer number (850627575).

Almost surely, 2^18585935860 is an apocalyptic number.

18585935860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18585935860 is an abundant number, since it is smaller than the sum of its proper divisors (22244187740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18585935860 is a wasteful number, since it uses less digits than its factorization.

18585935860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360180 (or 360178 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 58.

The spelling of 18585935860 in words is "eighteen billion, five hundred eighty-five million, nine hundred thirty-five thousand, eight hundred sixty".