18399810249983 has 2 divisors, whose sum is σ = 18399810249984. Its totient is φ = 18399810249982.

The previous prime is 18399810249959. The next prime is 18399810250007. The reversal of 18399810249983 is 38994201899381.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (18399810249959) and next prime (18399810250007).

It is an emirp because it is prime and its reverse (38994201899381) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18399810249983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18399810249983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18399810249283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9199905124991 + 9199905124992.

It is an arithmetic number, because the mean of its divisors is an integer number (9199905124992).

Almost surely, 2^{18399810249983} is an apocalyptic number.

18399810249983 is a deficient number, since it is larger than the sum of its proper divisors (1).

18399810249983 is an equidigital number, since it uses as much as digits as its factorization.

18399810249983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241864704, while the sum is 74.

The spelling of 18399810249983 in words is "eighteen trillion, three hundred ninety-nine billion, eight hundred ten million, two hundred forty-nine thousand, nine hundred eighty-three".