18285986323 has 8 divisors (see below), whose sum is σ = 20246086080. Its totient is φ = 16375509480.

The previous prime is 18285986321. The next prime is 18285986351. The reversal of 18285986323 is 32368958281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18285986323 - 2¹ = 18285986321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18285986321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12404953 + ... + 12406426.

It is an arithmetic number, because the mean of its divisors is an integer number (2530760760).

Almost surely, 2^18285986323 is an apocalyptic number.

18285986323 is a deficient number, since it is larger than the sum of its proper divisors (1960099757).

18285986323 is a wasteful number, since it uses less digits than its factorization.

18285986323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24811457.

The product of its digits is 4976640, while the sum is 55.

The spelling of 18285986323 in words is "eighteen billion, two hundred eighty-five million, nine hundred eighty-six thousand, three hundred twenty-three".