18414454439 has 2 divisors, whose sum is σ = 18414454440. Its totient is φ = 18414454438.

The previous prime is 18414454403. The next prime is 18414454459. The reversal of 18414454439 is 93445441481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18414454439 - 2⁸ = 18414454183 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18414454393 and 18414454402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18414454459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9207227219 + 9207227220.

It is an arithmetic number, because the mean of its divisors is an integer number (9207227220).

Almost surely, 2^18414454439 is an apocalyptic number.

18414454439 is a deficient number, since it is larger than the sum of its proper divisors (1).

18414454439 is an equidigital number, since it uses as much as digits as its factorization.

18414454439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1105920, while the sum is 47.

The spelling of 18414454439 in words is "eighteen billion, four hundred fourteen million, four hundred fifty-four thousand, four hundred thirty-nine".