18514267619 has 2 divisors, whose sum is σ = 18514267620. Its totient is φ = 18514267618.

The previous prime is 18514267553. The next prime is 18514267621. The reversal of 18514267619 is 91676241581.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18514267619 is a prime.

It is a super-2 number, since 2×18514267619² (a number of 21 digits) contains 22 as substring.

Together with 18514267621, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18514264619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9257133809 + 9257133810.

It is an arithmetic number, because the mean of its divisors is an integer number (9257133810).

Almost surely, 2^18514267619 is an apocalyptic number.

18514267619 is a deficient number, since it is larger than the sum of its proper divisors (1).

18514267619 is an equidigital number, since it uses as much as digits as its factorization.

18514267619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 50.

The spelling of 18514267619 in words is "eighteen billion, five hundred fourteen million, two hundred sixty-seven thousand, six hundred nineteen".