244001861 has 2 divisors, whose sum is σ = 244001862. Its totient is φ = 244001860.

The previous prime is 244001827. The next prime is 244001893. The reversal of 244001861 is 168100442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216648961 + 27352900 = 14719^2 + 5230^2 .

It is a cyclic number.

It is not a de Polignac number, because 244001861 - 2²⁶ = 176892997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 244001861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244001761) 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, 122000930 + 122000931.

It is an arithmetic number, because the mean of its divisors is an integer number (122000931).

Almost surely, 2^244001861 is an apocalyptic number.

It is an amenable number.

244001861 is a deficient number, since it is larger than the sum of its proper divisors (1).

244001861 is an equidigital number, since it uses as much as digits as its factorization.

244001861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 244001861 is about 15620.5589208581. The cubic root of 244001861 is about 624.8815656120.

The spelling of 244001861 in words is "two hundred forty-four million, one thousand, eight hundred sixty-one".