2813722681 has 16 divisors (see below), whose sum is σ = 3511836288. Its totient is φ = 2190124800.

The previous prime is 2813722663. The next prime is 2813722699. The reversal of 2813722681 is 1862273182.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2813722663) and next prime (2813722699).

It is a cyclic number.

It is not a de Polignac number, because 2813722681 - 2¹⁵ = 2813689913 is a prime.

It is a super-3 number, since 3×2813722681³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2813722601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53041 + ... + 91873.

It is an arithmetic number, because the mean of its divisors is an integer number (219489768).

Almost surely, 2^2813722681 is an apocalyptic number.

It is an amenable number.

2813722681 is a deficient number, since it is larger than the sum of its proper divisors (698113607).

2813722681 is a wasteful number, since it uses less digits than its factorization.

2813722681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39792.

The product of its digits is 64512, while the sum is 40.

The square root of 2813722681 is about 53044.5348834354. The cubic root of 2813722681 is about 1411.7585624649.

The spelling of 2813722681 in words is "two billion, eight hundred thirteen million, seven hundred twenty-two thousand, six hundred eighty-one".