1213826853 has 8 divisors (see below), whose sum is σ = 1657910016. Its totient is φ = 789480800.

The previous prime is 1213826851. The next prime is 1213826857. The reversal of 1213826853 is 3586283121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213826853 - 2¹ = 1213826851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213826851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4934133 + ... + 4934378.

It is an arithmetic number, because the mean of its divisors is an integer number (207238752).

Almost surely, 2^1213826853 is an apocalyptic number.

It is an amenable number.

1213826853 is a deficient number, since it is larger than the sum of its proper divisors (444083163).

1213826853 is an equidigital number, since it uses as much as digits as its factorization.

1213826853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9868555.

The product of its digits is 69120, while the sum is 39.

The square root of 1213826853 is about 34840.0179821997. The cubic root of 1213826853 is about 1066.7244438213.

The spelling of 1213826853 in words is "one billion, two hundred thirteen million, eight hundred twenty-six thousand, eight hundred fifty-three".