2194838913 has 4 divisors (see below), whose sum is σ = 2926451888. Its totient is φ = 1463225940.

The previous prime is 2194838897. The next prime is 2194838923. The reversal of 2194838913 is 3198384912.

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 2194838913 - 2⁴ = 2194838897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2194838923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365806483 + ... + 365806488.

It is an arithmetic number, because the mean of its divisors is an integer number (731612972).

Almost surely, 2^2194838913 is an apocalyptic number.

It is an amenable number.

2194838913 is a deficient number, since it is larger than the sum of its proper divisors (731612975).

2194838913 is an equidigital number, since it uses as much as digits as its factorization.

2194838913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731612974.

The product of its digits is 373248, while the sum is 48.

The square root of 2194838913 is about 46849.1079210693. The cubic root of 2194838913 is about 1299.5736102614.

The spelling of 2194838913 in words is "two billion, one hundred ninety-four million, eight hundred thirty-eight thousand, nine hundred thirteen".