2243397917 has 4 divisors (see below), whose sum is σ = 2276881536. Its totient is φ = 2209914300.

The previous prime is 2243397913. The next prime is 2243397931. The reversal of 2243397917 is 7197933422.

2243397917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 2243397917 - 2² = 2243397913 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 (2243397913) 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, 16741709 + ... + 16741842.

It is an arithmetic number, because the mean of its divisors is an integer number (569220384).

Almost surely, 2^2243397917 is an apocalyptic number.

It is an amenable number.

2243397917 is a deficient number, since it is larger than the sum of its proper divisors (33483619).

2243397917 is an equidigital number, since it uses as much as digits as its factorization.

2243397917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33483618.

The product of its digits is 571536, while the sum is 47.

The square root of 2243397917 is about 47364.5217119312. The cubic root of 2243397917 is about 1309.0877857680.

The spelling of 2243397917 in words is "two billion, two hundred forty-three million, three hundred ninety-seven thousand, nine hundred seventeen".