18144249623 has 2 divisors, whose sum is σ = 18144249624. Its totient is φ = 18144249622.

The previous prime is 18144249577. The next prime is 18144249631. The reversal of 18144249623 is 32694244181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18144249623 - 2¹⁸ = 18143987479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18144249023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9072124811 + 9072124812.

It is an arithmetic number, because the mean of its divisors is an integer number (9072124812).

Almost surely, 2^18144249623 is an apocalyptic number.

18144249623 is a deficient number, since it is larger than the sum of its proper divisors (1).

18144249623 is an equidigital number, since it uses as much as digits as its factorization.

18144249623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 44.

The spelling of 18144249623 in words is "eighteen billion, one hundred forty-four million, two hundred forty-nine thousand, six hundred twenty-three".