2018266109 has 2 divisors, whose sum is σ = 2018266110. Its totient is φ = 2018266108.

The previous prime is 2018266087. The next prime is 2018266147. The reversal of 2018266109 is 9016628102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1478633209 + 539632900 = 38453^2 + 23230^2 .

It is a cyclic number.

It is not a de Polignac number, because 2018266109 - 2¹² = 2018262013 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2018260109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1009133054 + 1009133055.

It is an arithmetic number, because the mean of its divisors is an integer number (1009133055).

Almost surely, 2^2018266109 is an apocalyptic number.

It is an amenable number.

2018266109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2018266109 is an equidigital number, since it uses as much as digits as its factorization.

2018266109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 2018266109 is about 44925.1166832096. The cubic root of 2018266109 is about 1263.7450742789.

The spelling of 2018266109 in words is "two billion, eighteen million, two hundred sixty-six thousand, one hundred nine".