18025446823 has 2 divisors, whose sum is σ = 18025446824. Its totient is φ = 18025446822.

The previous prime is 18025446821. The next prime is 18025446833. The reversal of 18025446823 is 32864452081.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18025446823 - 2¹ = 18025446821 is a prime.

Together with 18025446821, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18025446823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18025446821) 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, 9012723411 + 9012723412.

It is an arithmetic number, because the mean of its divisors is an integer number (9012723412).

Almost surely, 2^18025446823 is an apocalyptic number.

18025446823 is a deficient number, since it is larger than the sum of its proper divisors (1).

18025446823 is an equidigital number, since it uses as much as digits as its factorization.

18025446823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 368640, while the sum is 43.

The spelling of 18025446823 in words is "eighteen billion, twenty-five million, four hundred forty-six thousand, eight hundred twenty-three".