7181374021 has 2 divisors, whose sum is σ = 7181374022. Its totient is φ = 7181374020.

The previous prime is 7181374003. The next prime is 7181374063. The reversal of 7181374021 is 1204731817.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3862001025 + 3319372996 = 62145^2 + 57614^2 .

It is a cyclic number.

It is not a de Polignac number, because 7181374021 - 2¹⁷ = 7181242949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7181374621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3590687010 + 3590687011.

It is an arithmetic number, because the mean of its divisors is an integer number (3590687011).

Almost surely, 2^7181374021 is an apocalyptic number.

It is an amenable number.

7181374021 is a deficient number, since it is larger than the sum of its proper divisors (1).

7181374021 is an equidigital number, since it uses as much as digits as its factorization.

7181374021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 7181374021 is about 84742.9880344091. The cubic root of 7181374021 is about 1929.3122215745.

The spelling of 7181374021 in words is "seven billion, one hundred eighty-one million, three hundred seventy-four thousand, twenty-one".