4072723861 has 2 divisors, whose sum is σ = 4072723862. Its totient is φ = 4072723860.

The previous prime is 4072723793. The next prime is 4072723871. The reversal of 4072723861 is 1683272704.

4072723861 is digitally balanced in base 2, 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., 2977775761 + 1094948100 = 54569^2 + 33090^2 .

It is a cyclic number.

It is not a de Polignac number, because 4072723861 - 2²⁷ = 3938506133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4072723871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2036361930 + 2036361931.

It is an arithmetic number, because the mean of its divisors is an integer number (2036361931).

Almost surely, 2^4072723861 is an apocalyptic number.

It is an amenable number.

4072723861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4072723861 is an equidigital number, since it uses as much as digits as its factorization.

4072723861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 4072723861 is about 63817.8960872262. The cubic root of 4072723861 is about 1596.9634936481.

The spelling of 4072723861 in words is "four billion, seventy-two million, seven hundred twenty-three thousand, eight hundred sixty-one".