2928787189 has 2 divisors, whose sum is σ = 2928787190. Its totient is φ = 2928787188.

The previous prime is 2928787157. The next prime is 2928787289. The reversal of 2928787189 is 9817878292.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2137490289 + 791296900 = 46233^2 + 28130^2 .

It is a cyclic number.

It is not a de Polignac number, because 2928787189 - 2⁵ = 2928787157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2928787289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1464393594 + 1464393595.

It is an arithmetic number, because the mean of its divisors is an integer number (1464393595).

Almost surely, 2^2928787189 is an apocalyptic number.

It is an amenable number.

2928787189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2928787189 is an equidigital number, since it uses as much as digits as its factorization.

2928787189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8128512, while the sum is 61.

The square root of 2928787189 is about 54118.2703807134. The cubic root of 2928787189 is about 1430.7462141197.

The spelling of 2928787189 in words is "two billion, nine hundred twenty-eight million, seven hundred eighty-seven thousand, one hundred eighty-nine".