12351191819 has 2 divisors, whose sum is σ = 12351191820. Its totient is φ = 12351191818.

The previous prime is 12351191803. The next prime is 12351191837. The reversal of 12351191819 is 91819115321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12351191819 - 2⁴ = 12351191803 is a prime.

It is a super-2 number, since 2×12351191819² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12351197819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6175595909 + 6175595910.

It is an arithmetic number, because the mean of its divisors is an integer number (6175595910).

Almost surely, 2^12351191819 is an apocalyptic number.

12351191819 is a deficient number, since it is larger than the sum of its proper divisors (1).

12351191819 is an equidigital number, since it uses as much as digits as its factorization.

12351191819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 41.

The spelling of 12351191819 in words is "twelve billion, three hundred fifty-one million, one hundred ninety-one thousand, eight hundred nineteen".