2243634393 has 144 divisors (see below), whose sum is σ = 4265737728. Its totient is φ = 1037836800.

The previous prime is 2243634389. The next prime is 2243634409. The reversal of 2243634393 is 3934363422.

It is a happy number.

2243634393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2243634393 - 2² = 2243634389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2243634343) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 7168005 + ... + 7168317.

Almost surely, 2^2243634393 is an apocalyptic number.

It is an amenable number.

2243634393 is a deficient number, since it is larger than the sum of its proper divisors (2022103335).

2243634393 is a wasteful number, since it uses less digits than its factorization.

2243634393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 378 counting only the distinct ones).

The product of its digits is 279936, while the sum is 39.

The square root of 2243634393 is about 47367.0179872029. The cubic root of 2243634393 is about 1309.1337810213.

It can be divided in two parts, 2243 and 634393, that added together give a palindrome (636636).

The spelling of 2243634393 in words is "two billion, two hundred forty-three million, six hundred thirty-four thousand, three hundred ninety-three".