1655930489 has 2 divisors, whose sum is σ = 1655930490. Its totient is φ = 1655930488.

The previous prime is 1655930443. The next prime is 1655930513. The reversal of 1655930489 is 9840395561.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1592648464 + 63282025 = 39908^2 + 7955^2 .

It is a cyclic number.

It is not a de Polignac number, because 1655930489 - 2²⁰ = 1654881913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1655930789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827965244 + 827965245.

It is an arithmetic number, because the mean of its divisors is an integer number (827965245).

Almost surely, 2^1655930489 is an apocalyptic number.

It is an amenable number.

1655930489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655930489 is an equidigital number, since it uses as much as digits as its factorization.

1655930489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The square root of 1655930489 is about 40693.1258199711. The cubic root of 1655930489 is about 1183.0797861236.

The spelling of 1655930489 in words is "one billion, six hundred fifty-five million, nine hundred thirty thousand, four hundred eighty-nine".