1361594281 has 2 divisors, whose sum is σ = 1361594282. Its totient is φ = 1361594280.

The previous prime is 1361594261. The next prime is 1361594287. The reversal of 1361594281 is 1824951631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 737394025 + 624200256 = 27155^2 + 24984^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361594281 - 2¹¹ = 1361592233 is a prime.

It is a super-2 number, since 2×1361594281² = 3707877972103813922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1361594287) 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, 680797140 + 680797141.

It is an arithmetic number, because the mean of its divisors is an integer number (680797141).

Almost surely, 2^1361594281 is an apocalyptic number.

It is an amenable number.

1361594281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361594281 is an equidigital number, since it uses as much as digits as its factorization.

1361594281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 40.

The square root of 1361594281 is about 36899.7870048053. The cubic root of 1361594281 is about 1108.3644122867.

The spelling of 1361594281 in words is "one billion, three hundred sixty-one million, five hundred ninety-four thousand, two hundred eighty-one".