12910819 has 2 divisors, whose sum is σ = 12910820. Its totient is φ = 12910818.

The previous prime is 12910813. The next prime is 12910867. The reversal of 12910819 is 91801921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12910819 - 2¹⁹ = 12386531 is a prime.

It is a super-2 number, since 2×12910819² = 333378494501522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12910813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6455409 + 6455410.

It is an arithmetic number, because the mean of its divisors is an integer number (6455410).

Almost surely, 2^12910819 is an apocalyptic number.

12910819 is a deficient number, since it is larger than the sum of its proper divisors (1).

12910819 is an equidigital number, since it uses as much as digits as its factorization.

12910819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 12910819 is about 3593.1628128990. The cubic root of 12910819 is about 234.5945566665.

The spelling of 12910819 in words is "twelve million, nine hundred ten thousand, eight hundred nineteen".