3940819801 has 2 divisors, whose sum is σ = 3940819802. Its totient is φ = 3940819800.

The previous prime is 3940819777. The next prime is 3940819819. The reversal of 3940819801 is 1089180493.

3940819801 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., 2332890000 + 1607929801 = 48300^2 + 40099^2 .

It is a cyclic number.

It is not a de Polignac number, because 3940819801 - 2⁵ = 3940819769 is a prime.

It is not a weakly prime, because it can be changed into another prime (3940819871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1970409900 + 1970409901.

It is an arithmetic number, because the mean of its divisors is an integer number (1970409901).

Almost surely, 2^3940819801 is an apocalyptic number.

It is an amenable number.

3940819801 is a deficient number, since it is larger than the sum of its proper divisors (1).

3940819801 is an equidigital number, since it uses as much as digits as its factorization.

3940819801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 3940819801 is about 62775.9492242053. The cubic root of 3940819801 is about 1579.5335643135.

The spelling of 3940819801 in words is "three billion, nine hundred forty million, eight hundred nineteen thousand, eight hundred one".