244261861 has 2 divisors, whose sum is σ = 244261862. Its totient is φ = 244261860.

The previous prime is 244261841. The next prime is 244261877. The reversal of 244261861 is 168162442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240839361 + 3422500 = 15519^2 + 1850^2 .

It is a cyclic number.

It is not a de Polignac number, because 244261861 - 2⁹ = 244261349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244261841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122130930 + 122130931.

It is an arithmetic number, because the mean of its divisors is an integer number (122130931).

Almost surely, 2^244261861 is an apocalyptic number.

It is an amenable number.

244261861 is a deficient number, since it is larger than the sum of its proper divisors (1).

244261861 is an equidigital number, since it uses as much as digits as its factorization.

244261861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 34.

The square root of 244261861 is about 15628.8790704900. The cubic root of 244261861 is about 625.1034376001.

The spelling of 244261861 in words is "two hundred forty-four million, two hundred sixty-one thousand, eight hundred sixty-one".