890356945189 has 2 divisors, whose sum is σ = 890356945190. Its totient is φ = 890356945188.

The previous prime is 890356945187. The next prime is 890356945223. The reversal of 890356945189 is 981549653098.

890356945189 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., 620770652100 + 269586293089 = 787890^2 + 519217^2 .

It is a cyclic number.

It is not a de Polignac number, because 890356945189 - 2¹ = 890356945187 is a prime.

Together with 890356945187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (890356945187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445178472594 + 445178472595.

It is an arithmetic number, because the mean of its divisors is an integer number (445178472595).

Almost surely, 2^890356945189 is an apocalyptic number.

It is an amenable number.

890356945189 is a deficient number, since it is larger than the sum of its proper divisors (1).

890356945189 is an equidigital number, since it uses as much as digits as its factorization.

890356945189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 83980800, while the sum is 67.

The spelling of 890356945189 in words is "eight hundred ninety billion, three hundred fifty-six million, nine hundred forty-five thousand, one hundred eighty-nine".