2194367243 has 4 divisors (see below), whose sum is σ = 2194485768. Its totient is φ = 2194248720.

The previous prime is 2194367239. The next prime is 2194367257. The reversal of 2194367243 is 3427634912.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2194367243 - 2² = 2194367239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2194367243.

It is not an unprimeable number, because it can be changed into a prime (2194367543) 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, 24818 + ... + 70743.

It is an arithmetic number, because the mean of its divisors is an integer number (548621442).

Almost surely, 2^2194367243 is an apocalyptic number.

2194367243 is a deficient number, since it is larger than the sum of its proper divisors (118525).

2194367243 is an equidigital number, since it uses as much as digits as its factorization.

2194367243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118524.

The product of its digits is 217728, while the sum is 41.

The square root of 2194367243 is about 46844.0737233644. The cubic root of 2194367243 is about 1299.4805109767.

The spelling of 2194367243 in words is "two billion, one hundred ninety-four million, three hundred sixty-seven thousand, two hundred forty-three".