2078107189 has 2 divisors, whose sum is σ = 2078107190. Its totient is φ = 2078107188.

The previous prime is 2078107111. The next prime is 2078107193. The reversal of 2078107189 is 9817018702.

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., 1637820900 + 440286289 = 40470^2 + 20983^2 .

It is a cyclic number.

It is not a de Polignac number, because 2078107189 - 2¹⁵ = 2078074421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2078107589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039053594 + 1039053595.

It is an arithmetic number, because the mean of its divisors is an integer number (1039053595).

Almost surely, 2^2078107189 is an apocalyptic number.

It is an amenable number.

2078107189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2078107189 is an equidigital number, since it uses as much as digits as its factorization.

2078107189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 43.

The square root of 2078107189 is about 45586.2609675328. The cubic root of 2078107189 is about 1276.1135347479.

The spelling of 2078107189 in words is "two billion, seventy-eight million, one hundred seven thousand, one hundred eighty-nine".