7827422189 has 2 divisors, whose sum is σ = 7827422190. Its totient is φ = 7827422188.

The previous prime is 7827422173. The next prime is 7827422201. The reversal of 7827422189 is 9812247287.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7198164964 + 629257225 = 84842^2 + 25085^2 .

It is an emirp because it is prime and its reverse (9812247287) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7827422189 - 2⁴ = 7827422173 is a prime.

It is a super-2 number, since 2×7827422189² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7827422389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3913711094 + 3913711095.

It is an arithmetic number, because the mean of its divisors is an integer number (3913711095).

Almost surely, 2^7827422189 is an apocalyptic number.

It is an amenable number.

7827422189 is a deficient number, since it is larger than the sum of its proper divisors (1).

7827422189 is an equidigital number, since it uses as much as digits as its factorization.

7827422189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 50.

The square root of 7827422189 is about 88472.7200271360. The cubic root of 7827422189 is about 1985.5138447278.

The spelling of 7827422189 in words is "seven billion, eight hundred twenty-seven million, four hundred twenty-two thousand, one hundred eighty-nine".