2265638366 has 16 divisors (see below), whose sum is σ = 3496444944. Its totient is φ = 1100620224.

The previous prime is 2265638351. The next prime is 2265638407. The reversal of 2265638366 is 6638365622.

It is a super-2 number, since 2×2265638366² = 10266234410982299912, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2265638366.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 106025 + ... + 125588.

It is an arithmetic number, because the mean of its divisors is an integer number (218527809).

Almost surely, 2^2265638366 is an apocalyptic number.

2265638366 is a deficient number, since it is larger than the sum of its proper divisors (1230806578).

2265638366 is a wasteful number, since it uses less digits than its factorization.

2265638366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231755.

The product of its digits is 1866240, while the sum is 47.

The square root of 2265638366 is about 47598.7223147849. The cubic root of 2265638366 is about 1313.3995509027.

The spelling of 2265638366 in words is "two billion, two hundred sixty-five million, six hundred thirty-eight thousand, three hundred sixty-six".