1790765489 has 2 divisors, whose sum is σ = 1790765490. Its totient is φ = 1790765488.

The previous prime is 1790765467. The next prime is 1790765491. The reversal of 1790765489 is 9845670971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1463445025 + 327320464 = 38255^2 + 18092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1790765489 is a prime.

Together with 1790765491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1790965489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 895382744 + 895382745.

It is an arithmetic number, because the mean of its divisors is an integer number (895382745).

Almost surely, 2^1790765489 is an apocalyptic number.

It is an amenable number.

1790765489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1790765489 is an equidigital number, since it uses as much as digits as its factorization.

1790765489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 56.

The square root of 1790765489 is about 42317.4371742902. The cubic root of 1790765489 is about 1214.3566033599.

The spelling of 1790765489 in words is "one billion, seven hundred ninety million, seven hundred sixty-five thousand, four hundred eighty-nine".