18241446623 has 2 divisors, whose sum is σ = 18241446624. Its totient is φ = 18241446622.

The previous prime is 18241446557. The next prime is 18241446659. The reversal of 18241446623 is 32664414281.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18241446623 - 2⁸ = 18241446367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18241446673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9120723311 + 9120723312.

It is an arithmetic number, because the mean of its divisors is an integer number (9120723312).

Almost surely, 2^18241446623 is an apocalyptic number.

18241446623 is a deficient number, since it is larger than the sum of its proper divisors (1).

18241446623 is an equidigital number, since it uses as much as digits as its factorization.

18241446623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 41.

The spelling of 18241446623 in words is "eighteen billion, two hundred forty-one million, four hundred forty-six thousand, six hundred twenty-three".