2119636813 has 4 divisors (see below), whose sum is σ = 2422442080. Its totient is φ = 1816831548.

The previous prime is 2119636807. The next prime is 2119636837. The reversal of 2119636813 is 3186369112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2119636813 - 2²⁹ = 1582765901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2119636843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151402623 + ... + 151402636.

It is an arithmetic number, because the mean of its divisors is an integer number (605610520).

Almost surely, 2^2119636813 is an apocalyptic number.

It is an amenable number.

2119636813 is a deficient number, since it is larger than the sum of its proper divisors (302805267).

2119636813 is an equidigital number, since it uses as much as digits as its factorization.

2119636813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302805266.

The product of its digits is 46656, while the sum is 40.

The square root of 2119636813 is about 46039.5136051631. The cubic root of 2119636813 is about 1284.5582947937.

The spelling of 2119636813 in words is "two billion, one hundred nineteen million, six hundred thirty-six thousand, eight hundred thirteen".