1602985589 has 2 divisors, whose sum is σ = 1602985590. Its totient is φ = 1602985588.

The previous prime is 1602985577. The next prime is 1602985591. The reversal of 1602985589 is 9855892061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1529592100 + 73393489 = 39110^2 + 8567^2 .

It is a cyclic number.

It is not a de Polignac number, because 1602985589 - 2⁸ = 1602985333 is a prime.

Together with 1602985591, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1602985589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1602988589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801492794 + 801492795.

It is an arithmetic number, because the mean of its divisors is an integer number (801492795).

Almost surely, 2^1602985589 is an apocalyptic number.

It is an amenable number.

1602985589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1602985589 is an equidigital number, since it uses as much as digits as its factorization.

1602985589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 53.

The square root of 1602985589 is about 40037.3024690725. The cubic root of 1602985589 is about 1170.3341361876.

The spelling of 1602985589 in words is "one billion, six hundred two million, nine hundred eighty-five thousand, five hundred eighty-nine".