2243664261 has 12 divisors (see below), whose sum is σ = 3247620480. Its totient is φ = 1492650600.

The previous prime is 2243664259. The next prime is 2243664263. The reversal of 2243664261 is 1624663422.

2243664261 is a `hidden beast` number, since 2 + 2 + 4 + 3 + 6 + 642 + 6 + 1 = 666.

2243664261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2243664259) and next prime (2243664263).

It is not a de Polignac number, because 2243664261 - 2¹ = 2243664259 is a prime.

It is a super-2 number, since 2×2243664261² = 10068058632177352242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243664263) 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, 255915 + ... + 264536.

It is an arithmetic number, because the mean of its divisors is an integer number (270635040).

Almost surely, 2^2243664261 is an apocalyptic number.

It is an amenable number.

2243664261 is a deficient number, since it is larger than the sum of its proper divisors (1003956219).

2243664261 is a wasteful number, since it uses less digits than its factorization.

2243664261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520936 (or 520933 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 2243664261 is about 47367.3332688257. Note that the first 3 decimals coincide. The cubic root of 2243664261 is about 1309.1395902022.

The spelling of 2243664261 in words is "two billion, two hundred forty-three million, six hundred sixty-four thousand, two hundred sixty-one".