12849105819 has 16 divisors (see below), whose sum is σ = 18995998464. Its totient is φ = 7659674400.

The previous prime is 12849105809. The next prime is 12849105821. The reversal of 12849105819 is 91850194821.

It is a happy number.

It is not a de Polignac number, because 12849105819 - 2⁷ = 12849105691 is a prime.

It is a super-2 number, since 2×12849105819² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12849105809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3189519 + ... + 3193544.

It is an arithmetic number, because the mean of its divisors is an integer number (1187249904).

Almost surely, 2^12849105819 is an apocalyptic number.

12849105819 is a deficient number, since it is larger than the sum of its proper divisors (6146892645).

12849105819 is a wasteful number, since it uses less digits than its factorization.

12849105819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6383138.

The product of its (nonzero) digits is 207360, while the sum is 48.

The spelling of 12849105819 in words is "twelve billion, eight hundred forty-nine million, one hundred five thousand, eight hundred nineteen".