12845819 has 4 divisors (see below), whose sum is σ = 14680944. Its totient is φ = 11010696.

The previous prime is 12845809. The next prime is 12845821. The reversal of 12845819 is 91854821.

12845819 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12845819 - 2⁴ = 12845803 is a prime.

It is a super-2 number, since 2×12845819² = 330030131561522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12845809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917552 + ... + 917565.

It is an arithmetic number, because the mean of its divisors is an integer number (3670236).

Almost surely, 2^12845819 is an apocalyptic number.

12845819 is a deficient number, since it is larger than the sum of its proper divisors (1835125).

12845819 is an equidigital number, since it uses as much as digits as its factorization.

12845819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835124.

The product of its digits is 23040, while the sum is 38.

The square root of 12845819 is about 3584.1064437318. The cubic root of 12845819 is about 234.2002024442.

The spelling of 12845819 in words is "twelve million, eight hundred forty-five thousand, eight hundred nineteen".