18749718006 has 32 divisors (see below), whose sum is σ = 37614813696. Its totient is φ = 6230700000.

The previous prime is 18749717993. The next prime is 18749718007. The reversal of 18749718006 is 60081794781.

It is a self number, because there is not a number n which added to its sum of digits gives 18749718006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18749718007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5819476 + ... + 5822696.

It is an arithmetic number, because the mean of its divisors is an integer number (1175462928).

Almost surely, 2^18749718006 is an apocalyptic number.

18749718006 is an abundant number, since it is smaller than the sum of its proper divisors (18865095690).

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

18749718006 is a wasteful number, since it uses less digits than its factorization.

18749718006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5908.

The product of its (nonzero) digits is 677376, while the sum is 51.

The spelling of 18749718006 in words is "eighteen billion, seven hundred forty-nine million, seven hundred eighteen thousand, six".