18640146438622 has 8 divisors (see below), whose sum is σ = 27975866120856. Its totient is φ = 9314857731672.

The previous prime is 18640146438611. The next prime is 18640146438643. The reversal of 18640146438622 is 22683464104681.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2607739353 + ... + 2607746500.

It is an arithmetic number, because the mean of its divisors is an integer number (3496983265107).

Almost surely, 2^{18640146438622} is an apocalyptic number.

18640146438622 is a deficient number, since it is larger than the sum of its proper divisors (9335719682234).

18640146438622 is a wasteful number, since it uses less digits than its factorization.

18640146438622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5215487642.

The product of its (nonzero) digits is 10616832, while the sum is 55.

The spelling of 18640146438622 in words is "eighteen trillion, six hundred forty billion, one hundred forty-six million, four hundred thirty-eight thousand, six hundred twenty-two".