7291926881 has 2 divisors, whose sum is σ = 7291926882. Its totient is φ = 7291926880.

The previous prime is 7291926839. The next prime is 7291926899. The reversal of 7291926881 is 1886291927.

7291926881 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7137546256 + 154380625 = 84484^2 + 12425^2 .

It is a cyclic number.

It is not a de Polignac number, because 7291926881 - 2¹⁰ = 7291925857 is a prime.

It is a super-3 number, since 3×7291926881³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (7291926181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3645963440 + 3645963441.

It is an arithmetic number, because the mean of its divisors is an integer number (3645963441).

Almost surely, 2^7291926881 is an apocalyptic number.

It is an amenable number.

7291926881 is a deficient number, since it is larger than the sum of its proper divisors (1).

7291926881 is an equidigital number, since it uses as much as digits as its factorization.

7291926881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 53.

The square root of 7291926881 is about 85392.7800285247. The cubic root of 7291926881 is about 1939.1620429861.

The spelling of 7291926881 in words is "seven billion, two hundred ninety-one million, nine hundred twenty-six thousand, eight hundred eighty-one".