18914744443 has 8 divisors (see below), whose sum is σ = 22362259680. Its totient is φ = 15653581440.

The previous prime is 18914744423. The next prime is 18914744449. The reversal of 18914744443 is 34444741981.

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

It is not a de Polignac number, because 18914744443 - 2²⁹ = 18377873531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18914744449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46587838 + ... + 46588243.

It is an arithmetic number, because the mean of its divisors is an integer number (2795282460).

Almost surely, 2^18914744443 is an apocalyptic number.

18914744443 is a deficient number, since it is larger than the sum of its proper divisors (3447515237).

18914744443 is an equidigital number, since it uses as much as digits as its factorization.

18914744443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93176117.

The product of its digits is 1548288, while the sum is 49.

The spelling of 18914744443 in words is "eighteen billion, nine hundred fourteen million, seven hundred forty-four thousand, four hundred forty-three".