13885307819 has 2 divisors, whose sum is σ = 13885307820. Its totient is φ = 13885307818.

The previous prime is 13885307803. The next prime is 13885307837. The reversal of 13885307819 is 91870358831.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13885307819 - 2⁴ = 13885307803 is a prime.

It is a super-2 number, since 2×13885307819² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13885307879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6942653909 + 6942653910.

It is an arithmetic number, because the mean of its divisors is an integer number (6942653910).

Almost surely, 2^13885307819 is an apocalyptic number.

13885307819 is a deficient number, since it is larger than the sum of its proper divisors (1).

13885307819 is an equidigital number, since it uses as much as digits as its factorization.

13885307819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 13885307819 in words is "thirteen billion, eight hundred eighty-five million, three hundred seven thousand, eight hundred nineteen".