18513814703 has 2 divisors, whose sum is σ = 18513814704. Its totient is φ = 18513814702.

The previous prime is 18513814679. The next prime is 18513814721. The reversal of 18513814703 is 30741831581.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18513814703 - 2²⁶ = 18446705839 is a prime.

It is a super-2 number, since 2×18513814703² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18513810703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9256907351 + 9256907352.

It is an arithmetic number, because the mean of its divisors is an integer number (9256907352).

Almost surely, 2^18513814703 is an apocalyptic number.

18513814703 is a deficient number, since it is larger than the sum of its proper divisors (1).

18513814703 is an equidigital number, since it uses as much as digits as its factorization.

18513814703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 18513814703 in words is "eighteen billion, five hundred thirteen million, eight hundred fourteen thousand, seven hundred three".