2223201645 has 48 divisors (see below), whose sum is σ = 4408290432. Its totient is φ = 1015344000.

The previous prime is 2223201619. The next prime is 2223201703. The reversal of 2223201645 is 5461023222.

It is a happy number.

It is not a de Polignac number, because 2223201645 - 2⁶ = 2223201581 is a prime.

It is a super-3 number, since 3×2223201645³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 401395 + ... + 406895.

It is an arithmetic number, because the mean of its divisors is an integer number (91839384).

Almost surely, 2^2223201645 is an apocalyptic number.

It is an amenable number.

2223201645 is a deficient number, since it is larger than the sum of its proper divisors (2185088787).

2223201645 is a wasteful number, since it uses less digits than its factorization.

2223201645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6802 (or 6799 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 2223201645 is about 47150.8392820319. The cubic root of 2223201645 is about 1305.1475677579.

Adding to 2223201645 its reverse (5461023222), we get a palindrome (7684224867).

The spelling of 2223201645 in words is "two billion, two hundred twenty-three million, two hundred one thousand, six hundred forty-five".