2245922681 has 8 divisors (see below), whose sum is σ = 2307353160. Its totient is φ = 2184530688.

The previous prime is 2245922659. The next prime is 2245922687. The reversal of 2245922681 is 1862295422.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1162196281 + 1083726400 = 34091^2 + 32920^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2245922681 - 2²⁶ = 2178813817 is a prime.

It is a super-2 number, since 2×2245922681² = 10088337378060455522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2245922687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139985 + ... + 155201.

It is an arithmetic number, because the mean of its divisors is an integer number (288419145).

Almost surely, 2^2245922681 is an apocalyptic number.

It is an amenable number.

2245922681 is a deficient number, since it is larger than the sum of its proper divisors (61430479).

2245922681 is a wasteful number, since it uses less digits than its factorization.

2245922681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19243.

The product of its digits is 138240, while the sum is 41.

The square root of 2245922681 is about 47391.1666980251. The cubic root of 2245922681 is about 1309.5786926753.

The spelling of 2245922681 in words is "two billion, two hundred forty-five million, nine hundred twenty-two thousand, six hundred eighty-one".