18686870322 has 32 divisors (see below), whose sum is σ = 39584547072. Its totient is φ = 5860717824.

The previous prime is 18686870263. The next prime is 18686870353. The reversal of 18686870322 is 22307868681.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320628 + ... + 374400.

It is an arithmetic number, because the mean of its divisors is an integer number (1237017096).

Almost surely, 2^18686870322 is an apocalyptic number.

18686870322 is an abundant number, since it is smaller than the sum of its proper divisors (20897676750).

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

18686870322 is a wasteful number, since it uses less digits than its factorization.

18686870322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57202.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 18686870322 in words is "eighteen billion, six hundred eighty-six million, eight hundred seventy thousand, three hundred twenty-two".