2905820189 has 2 divisors, whose sum is σ = 2905820190. Its totient is φ = 2905820188.

The previous prime is 2905820179. The next prime is 2905820219. The reversal of 2905820189 is 9810285092.

2905820189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2105892100 + 799928089 = 45890^2 + 28283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2905820189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2905820179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1452910094 + 1452910095.

It is an arithmetic number, because the mean of its divisors is an integer number (1452910095).

Almost surely, 2^2905820189 is an apocalyptic number.

It is an amenable number.

2905820189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2905820189 is an equidigital number, since it uses as much as digits as its factorization.

2905820189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 2905820189 is about 53905.6600831490. The cubic root of 2905820189 is about 1426.9965143072.

The spelling of 2905820189 in words is "two billion, nine hundred five million, eight hundred twenty thousand, one hundred eighty-nine".