18644237682022 has 8 divisors (see below), whose sum is σ = 27980388820296. Its totient is φ = 9317441408592.

The previous prime is 18644237681989. The next prime is 18644237682023. The reversal of 18644237682022 is 22028673244681.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18644237682023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2338711228 + ... + 2338719199.

It is an arithmetic number, because the mean of its divisors is an integer number (3497548602537).

Almost surely, 2^{18644237682022} is an apocalyptic number.

18644237682022 is a deficient number, since it is larger than the sum of its proper divisors (9336151138274).

18644237682022 is a wasteful number, since it uses less digits than its factorization.

18644237682022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4677432422.

The product of its (nonzero) digits is 12386304, while the sum is 55.

The spelling of 18644237682022 in words is "eighteen trillion, six hundred forty-four billion, two hundred thirty-seven million, six hundred eighty-two thousand, twenty-two".