18502229519 has 2 divisors, whose sum is σ = 18502229520. Its totient is φ = 18502229518.

The previous prime is 18502229461. The next prime is 18502229533. The reversal of 18502229519 is 91592220581.

It is a strong prime.

It is an emirp because it is prime and its reverse (91592220581) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18502229519 is a prime.

It is a super-2 number, since 2×18502229519² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18502229519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18502229539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9251114759 + 9251114760.

It is an arithmetic number, because the mean of its divisors is an integer number (9251114760).

Almost surely, 2^18502229519 is an apocalyptic number.

18502229519 is a deficient number, since it is larger than the sum of its proper divisors (1).

18502229519 is an equidigital number, since it uses as much as digits as its factorization.

18502229519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 44.

The spelling of 18502229519 in words is "eighteen billion, five hundred two million, two hundred twenty-nine thousand, five hundred nineteen".