2112939813 has 8 divisors (see below), whose sum is σ = 2855845888. Its totient is φ = 1389330144.

The previous prime is 2112939799. The next prime is 2112939893. The reversal of 2112939813 is 3189392112.

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

It is not a de Polignac number, because 2112939813 - 2¹³ = 2112931621 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 (2112939893) 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 7 ways as a sum of consecutive naturals, for example, 4823845 + ... + 4824282.

It is an arithmetic number, because the mean of its divisors is an integer number (356980736).

Almost surely, 2^2112939813 is an apocalyptic number.

It is an amenable number.

2112939813 is a deficient number, since it is larger than the sum of its proper divisors (742906075).

2112939813 is an equidigital number, since it uses as much as digits as its factorization.

2112939813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9648203.

The product of its digits is 23328, while the sum is 39.

The square root of 2112939813 is about 45966.7250628104. The cubic root of 2112939813 is about 1283.2040120133.

The spelling of 2112939813 in words is "two billion, one hundred twelve million, nine hundred thirty-nine thousand, eight hundred thirteen".