18704296536 has 96 divisors (see below), whose sum is σ = 48534071040. Its totient is φ = 6006275712.

The previous prime is 18704296511. The next prime is 18704296571. The reversal of 18704296536 is 63569240781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3381405 + ... + 3386931.

It is an arithmetic number, because the mean of its divisors is an integer number (505563240).

It is a 1-persistent number, because it is pandigital, but 2⋅18704296536 = 37408593072 is not.

Almost surely, 2^18704296536 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 18704296536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24267035520).

18704296536 is an abundant number, since it is smaller than the sum of its proper divisors (29829774504).

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

18704296536 is a wasteful number, since it uses less digits than its factorization.

18704296536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5713 (or 5672 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 18704296536 in words is "eighteen billion, seven hundred four million, two hundred ninety-six thousand, five hundred thirty-six".