2243664505 has 12 divisors (see below), whose sum is σ = 2860091820. Its totient is φ = 1689346304.

The previous prime is 2243664503. The next prime is 2243664517. The reversal of 2243664505 is 5054663422.

It can be written as a sum of positive squares in 6 ways, for example, as 18844281 + 2224820224 = 4341^2 + 47168^2 .

It is not a de Polignac number, because 2243664505 - 2¹ = 2243664503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2243664503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 774910 + ... + 777799.

It is an arithmetic number, because the mean of its divisors is an integer number (238340985).

Almost surely, 2^2243664505 is an apocalyptic number.

It is an amenable number.

2243664505 is a deficient number, since it is larger than the sum of its proper divisors (616427315).

2243664505 is a wasteful number, since it uses less digits than its factorization.

2243664505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552748 (or 1552731 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

The square root of 2243664505 is about 47367.3358444403. The cubic root of 2243664505 is about 1309.1396376589.

The spelling of 2243664505 in words is "two billion, two hundred forty-three million, six hundred sixty-four thousand, five hundred five".