18420326841 has 8 divisors (see below), whose sum is σ = 28069069504. Its totient is φ = 10525901040.

The previous prime is 18420326819. The next prime is 18420326857. The reversal of 18420326841 is 14862302481.

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

It is not a de Polignac number, because 18420326841 - 2¹⁴ = 18420310457 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18420326841.

It is not an unprimeable number, because it can be changed into a prime (18420321841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438579190 + ... + 438579231.

It is an arithmetic number, because the mean of its divisors is an integer number (3508633688).

Almost surely, 2^18420326841 is an apocalyptic number.

It is an amenable number.

18420326841 is a deficient number, since it is larger than the sum of its proper divisors (9648742663).

18420326841 is an equidigital number, since it uses as much as digits as its factorization.

18420326841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877158431.

The product of its (nonzero) digits is 73728, while the sum is 39.

The spelling of 18420326841 in words is "eighteen billion, four hundred twenty million, three hundred twenty-six thousand, eight hundred forty-one".