2266381813 has 8 divisors (see below), whose sum is σ = 2388771000. Its totient is φ = 2146941888.

The previous prime is 2266381771. The next prime is 2266381837. The reversal of 2266381813 is 3181836622.

It can be written as a sum of positive squares in 4 ways, for example, as 655001649 + 1611380164 = 25593^2 + 40142^2 .

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 2266381813 - 2¹⁷ = 2266250741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2266387813) 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, 735738 + ... + 738811.

It is an arithmetic number, because the mean of its divisors is an integer number (298596375).

Almost surely, 2^2266381813 is an apocalyptic number.

It is an amenable number.

2266381813 is a deficient number, since it is larger than the sum of its proper divisors (122389187).

2266381813 is a wasteful number, since it uses less digits than its factorization.

2266381813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474631.

The product of its digits is 82944, while the sum is 40.

The square root of 2266381813 is about 47606.5312010863. The cubic root of 2266381813 is about 1313.5431949174.

The spelling of 2266381813 in words is "two billion, two hundred sixty-six million, three hundred eighty-one thousand, eight hundred thirteen".