2985916789 has 2 divisors, whose sum is σ = 2985916790. Its totient is φ = 2985916788.

The previous prime is 2985916777. The next prime is 2985916811. The reversal of 2985916789 is 9876195892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2627382564 + 358534225 = 51258^2 + 18935^2 .

It is a cyclic number.

It is not a de Polignac number, because 2985916789 - 2⁹ = 2985916277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2985916789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2985916729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1492958394 + 1492958395.

It is an arithmetic number, because the mean of its divisors is an integer number (1492958395).

Almost surely, 2^2985916789 is an apocalyptic number.

It is an amenable number.

2985916789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2985916789 is an equidigital number, since it uses as much as digits as its factorization.

2985916789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19595520, while the sum is 64.

The square root of 2985916789 is about 54643.5429762749. The cubic root of 2985916789 is about 1439.9891956815.

The spelling of 2985916789 in words is "two billion, nine hundred eighty-five million, nine hundred sixteen thousand, seven hundred eighty-nine".