1371561589 has 2 divisors, whose sum is σ = 1371561590. Its totient is φ = 1371561588.

The previous prime is 1371561571. The next prime is 1371561601. The reversal of 1371561589 is 9851651731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1368260100 + 3301489 = 36990^2 + 1817^2 .

It is a cyclic number.

It is not a de Polignac number, because 1371561589 - 2⁵ = 1371561557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1371561509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685780794 + 685780795.

It is an arithmetic number, because the mean of its divisors is an integer number (685780795).

Almost surely, 2^1371561589 is an apocalyptic number.

It is an amenable number.

1371561589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371561589 is an equidigital number, since it uses as much as digits as its factorization.

1371561589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 46.

The square root of 1371561589 is about 37034.5998898328. The cubic root of 1371561589 is about 1111.0623676324.

The spelling of 1371561589 in words is "one billion, three hundred seventy-one million, five hundred sixty-one thousand, five hundred eighty-nine".