18986500165322 has 4 divisors (see below), whose sum is σ = 28479750247986. Its totient is φ = 9493250082660.

The previous prime is 18986500165319. The next prime is 18986500165327. The reversal of 18986500165322 is 22356100568981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16648350297121 + 2338149868201 = 4080239^2 + 1529101^2 .

It is not an unprimeable number, because it can be changed into a prime (18986500165327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4746625041329 + ... + 4746625041332.

Almost surely, 2^{18986500165322} is an apocalyptic number.

18986500165322 is a deficient number, since it is larger than the sum of its proper divisors (9493250082664).

18986500165322 is an equidigital number, since it uses as much as digits as its factorization.

18986500165322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9493250082663.

The product of its (nonzero) digits is 6220800, while the sum is 56.

The spelling of 18986500165322 in words is "eighteen trillion, nine hundred eighty-six billion, five hundred million, one hundred sixty-five thousand, three hundred twenty-two".