18244106443 has 2 divisors, whose sum is σ = 18244106444. Its totient is φ = 18244106442.

The previous prime is 18244106411. The next prime is 18244106449. The reversal of 18244106443 is 34460144281.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18244106443 - 2⁵ = 18244106411 is a prime.

It is a super-2 number, since 2×18244106443² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18244106449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9122053221 + 9122053222.

It is an arithmetic number, because the mean of its divisors is an integer number (9122053222).

Almost surely, 2^18244106443 is an apocalyptic number.

18244106443 is a deficient number, since it is larger than the sum of its proper divisors (1).

18244106443 is an equidigital number, since it uses as much as digits as its factorization.

18244106443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 37.

The spelling of 18244106443 in words is "eighteen billion, two hundred forty-four million, one hundred six thousand, four hundred forty-three".