18585941860 has 12 divisors (see below), whose sum is σ = 39030477948. Its totient is φ = 7434376736.

The previous prime is 18585941819. The next prime is 18585941879. The reversal of 18585941860 is 6814958581.

It can be written as a sum of positive squares in 2 ways, for example, as 12129497956 + 6456443904 = 110134^2 + 80352^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464648527 + ... + 464648566.

It is an arithmetic number, because the mean of its divisors is an integer number (3252539829).

Almost surely, 2^18585941860 is an apocalyptic number.

18585941860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18585941860 is an abundant number, since it is smaller than the sum of its proper divisors (20444536088).

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

18585941860 is a wasteful number, since it uses less digits than its factorization.

18585941860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929297102 (or 929297100 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 55.

The spelling of 18585941860 in words is "eighteen billion, five hundred eighty-five million, nine hundred forty-one thousand, eight hundred sixty".