8190090109 has 2 divisors, whose sum is σ = 8190090110. Its totient is φ = 8190090108.

The previous prime is 8190090089. The next prime is 8190090113. The reversal of 8190090109 is 9010900918.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6670805625 + 1519284484 = 81675^2 + 38978^2 .

It is a cyclic number.

It is not a de Polignac number, because 8190090109 - 2²³ = 8181701501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8190090169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4095045054 + 4095045055.

It is an arithmetic number, because the mean of its divisors is an integer number (4095045055).

Almost surely, 2^8190090109 is an apocalyptic number.

It is an amenable number.

8190090109 is a deficient number, since it is larger than the sum of its proper divisors (1).

8190090109 is an equidigital number, since it uses as much as digits as its factorization.

8190090109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 8190090109 is about 90499.1166199980. The cubic root of 8190090109 is about 2015.7170067262.

The spelling of 8190090109 in words is "eight billion, one hundred ninety million, ninety thousand, one hundred nine".