2243863190209 has 9 divisors (see below), whose sum is σ = 2248012683777. Its totient is φ = 2239721350164.

The previous prime is 2243863190189. The next prime is 2243863190279. The reversal of 2243863190209 is 9020913683422.

The square root of 2243863190209 is 1497953.

It is a perfect power (a square), and thus also a powerful number.

It is a de Polignac number, because none of the positive numbers 2^k-2243863190209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2243863190279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1106986254 + ... + 1106988280.

Almost surely, 2^{2243863190209} is an apocalyptic number.

2243863190209 is the 1497953-rd square number.

2243863190209 is the 748977-th centered octagonal number.

It is an amenable number.

2243863190209 is a deficient number, since it is larger than the sum of its proper divisors (4149493568).

2243863190209 is an frugal number, since it uses more digits than its factorization.

2243863190209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5532 (or 2766 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 49.

Multiplying 2243863190209 by its sum of digits (49), we get a square (109949296320241 = 10485671²).

The spelling of 2243863190209 in words is "two trillion, two hundred forty-three billion, eight hundred sixty-three million, one hundred ninety thousand, two hundred nine".