3666845837 has 2 divisors, whose sum is σ = 3666845838. Its totient is φ = 3666845836.

The previous prime is 3666845803. The next prime is 3666845843. The reversal of 3666845837 is 7385486663.

3666845837 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., 3596520841 + 70324996 = 59971^2 + 8386^2 .

It is a cyclic number.

It is not a de Polignac number, because 3666845837 - 2¹⁰ = 3666844813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3666845857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1833422918 + 1833422919.

It is an arithmetic number, because the mean of its divisors is an integer number (1833422919).

Almost surely, 2^3666845837 is an apocalyptic number.

It is an amenable number.

3666845837 is a deficient number, since it is larger than the sum of its proper divisors (1).

3666845837 is an equidigital number, since it uses as much as digits as its factorization.

3666845837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 56.

The square root of 3666845837 is about 60554.4865142130. The cubic root of 3666845837 is about 1542.0467860945.

The spelling of 3666845837 in words is "three billion, six hundred sixty-six million, eight hundred forty-five thousand, eight hundred thirty-seven".