18286870736 has 20 divisors (see below), whose sum is σ = 36573742464. Its totient is φ = 8848485600.

The previous prime is 18286870729. The next prime is 18286870747. The reversal of 18286870736 is 63707868281.

It is a happy number.

18286870736 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18433850 + ... + 18434841.

Almost surely, 2^18286870736 is an apocalyptic number.

18286870736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18286870736 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18286870736 is a wasteful number, since it uses less digits than its factorization.

18286870736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36868730 (or 36868724 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 18286870736 in words is "eighteen billion, two hundred eighty-six million, eight hundred seventy thousand, seven hundred thirty-six".