7862242681 has 2 divisors, whose sum is σ = 7862242682. Its totient is φ = 7862242680.

The previous prime is 7862242649. The next prime is 7862242691. The reversal of 7862242681 is 1862422687.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6541574400 + 1320668281 = 80880^2 + 36341^2 .

It is a cyclic number.

It is not a de Polignac number, because 7862242681 - 2⁵ = 7862242649 is a prime.

It is a super-2 number, since 2×7862242681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7862242601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3931121340 + 3931121341.

It is an arithmetic number, because the mean of its divisors is an integer number (3931121341).

Almost surely, 2^7862242681 is an apocalyptic number.

It is an amenable number.

7862242681 is a deficient number, since it is larger than the sum of its proper divisors (1).

7862242681 is an equidigital number, since it uses as much as digits as its factorization.

7862242681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 46.

The square root of 7862242681 is about 88669.2882626223. The cubic root of 7862242681 is about 1988.4536930918.

The spelling of 7862242681 in words is "seven billion, eight hundred sixty-two million, two hundred forty-two thousand, six hundred eighty-one".