1331962589 has 2 divisors, whose sum is σ = 1331962590. Its totient is φ = 1331962588.

The previous prime is 1331962571. The next prime is 1331962601. The reversal of 1331962589 is 9852691331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 669929689 + 662032900 = 25883^2 + 25730^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331962589 - 2²⁸ = 1063527133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331922589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665981294 + 665981295.

It is an arithmetic number, because the mean of its divisors is an integer number (665981295).

Almost surely, 2^1331962589 is an apocalyptic number.

It is an amenable number.

1331962589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331962589 is an equidigital number, since it uses as much as digits as its factorization.

1331962589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 47.

The square root of 1331962589 is about 36496.0626506477. The cubic root of 1331962589 is about 1100.2651121330.

The spelling of 1331962589 in words is "one billion, three hundred thirty-one million, nine hundred sixty-two thousand, five hundred eighty-nine".