1355961589 has 2 divisors, whose sum is σ = 1355961590. Its totient is φ = 1355961588.

The previous prime is 1355961587. The next prime is 1355961617. The reversal of 1355961589 is 9851695531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 970820964 + 385140625 = 31158^2 + 19625^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355961589 - 2¹ = 1355961587 is a prime.

Together with 1355961587, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1355961587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677980794 + 677980795.

It is an arithmetic number, because the mean of its divisors is an integer number (677980795).

Almost surely, 2^1355961589 is an apocalyptic number.

It is an amenable number.

1355961589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355961589 is an equidigital number, since it uses as much as digits as its factorization.

1355961589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1458000, while the sum is 52.

The square root of 1355961589 is about 36823.3837255622. The cubic root of 1355961589 is about 1106.8339260166.

The spelling of 1355961589 in words is "one billion, three hundred fifty-five million, nine hundred sixty-one thousand, five hundred eighty-nine".