14978135819 has 2 divisors, whose sum is σ = 14978135820. Its totient is φ = 14978135818.

The previous prime is 14978135791. The next prime is 14978135833. The reversal of 14978135819 is 91853187941.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14978135819 is a prime.

It is a super-2 number, since 2×14978135819² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (14978105819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7489067909 + 7489067910.

It is an arithmetic number, because the mean of its divisors is an integer number (7489067910).

Almost surely, 2^14978135819 is an apocalyptic number.

14978135819 is a deficient number, since it is larger than the sum of its proper divisors (1).

14978135819 is an equidigital number, since it uses as much as digits as its factorization.

14978135819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 56.

The spelling of 14978135819 in words is "fourteen billion, nine hundred seventy-eight million, one hundred thirty-five thousand, eight hundred nineteen".