18700943004 has 72 divisors (see below), whose sum is σ = 48646590720. Its totient is φ = 6053035392.

The previous prime is 18700943003. The next prime is 18700943011. The reversal of 18700943004 is 40034900781.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 18700943004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18700943003) by changing a digit.

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, 664197 + ... + 691779.

Almost surely, 2^18700943004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18700943004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24323295360).

18700943004 is an abundant number, since it is smaller than the sum of its proper divisors (29945647716).

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

18700943004 is a wasteful number, since it uses less digits than its factorization.

18700943004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28139 (or 28134 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 18700943004 in words is "eighteen billion, seven hundred million, nine hundred forty-three thousand, four".