18785807700 has 72 divisors (see below), whose sum is σ = 59294850720. Its totient is φ = 4554134400.

The previous prime is 18785807633. The next prime is 18785807713. The reversal of 18785807700 is 770858781.

It is a happy number.

It is a super-3 number, since 3×18785807700³ (a number of 32 digits) contains 333 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 23 ways as a sum of consecutive naturals, for example, 2843035 + ... + 2849634.

Almost surely, 2^18785807700 is an apocalyptic number.

18785807700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18785807700 is an abundant number, since it is smaller than the sum of its proper divisors (40509043020).

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

18785807700 is a wasteful number, since it uses less digits than its factorization.

18785807700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5692697 (or 5692690 counting only the distinct ones).

The product of its (nonzero) digits is 878080, while the sum is 51.

The spelling of 18785807700 in words is "eighteen billion, seven hundred eighty-five million, eight hundred seven thousand, seven hundred".