7926164861 has 2 divisors, whose sum is σ = 7926164862. Its totient is φ = 7926164860.

The previous prime is 7926164839. The next prime is 7926164903. The reversal of 7926164861 is 1684616297.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7826763961 + 99400900 = 88469^2 + 9970^2 .

It is a cyclic number.

It is not a de Polignac number, because 7926164861 - 2²² = 7921970557 is a prime.

It is a super-2 number, since 2×7926164861² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7926164461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3963082430 + 3963082431.

It is an arithmetic number, because the mean of its divisors is an integer number (3963082431).

Almost surely, 2^7926164861 is an apocalyptic number.

It is an amenable number.

7926164861 is a deficient number, since it is larger than the sum of its proper divisors (1).

7926164861 is an equidigital number, since it uses as much as digits as its factorization.

7926164861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 50.

The square root of 7926164861 is about 89029.0113446173. The cubic root of 7926164861 is about 1993.8280448270.

The spelling of 7926164861 in words is "seven billion, nine hundred twenty-six million, one hundred sixty-four thousand, eight hundred sixty-one".