18594019660 has 24 divisors (see below), whose sum is σ = 39066009696. Its totient is φ = 7434071040.

The previous prime is 18594019649. The next prime is 18594019663. The reversal of 18594019660 is 6691049581.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18594019663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177736 + ... + 262255.

It is an arithmetic number, because the mean of its divisors is an integer number (1627750404).

Almost surely, 2^18594019660 is an apocalyptic number.

18594019660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18594019660 is an abundant number, since it is smaller than the sum of its proper divisors (20471990036).

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

18594019660 is a wasteful number, since it uses less digits than its factorization.

18594019660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442113 (or 442111 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 18594019660 in words is "eighteen billion, five hundred ninety-four million, nineteen thousand, six hundred sixty".