2101067909 has 2 divisors, whose sum is σ = 2101067910. Its totient is φ = 2101067908.

The previous prime is 2101067887. The next prime is 2101067929. The reversal of 2101067909 is 9097601012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1896863809 + 204204100 = 43553^2 + 14290^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101067909 - 2²⁴ = 2084290693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101067929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050533954 + 1050533955.

It is an arithmetic number, because the mean of its divisors is an integer number (1050533955).

Almost surely, 2^2101067909 is an apocalyptic number.

It is an amenable number.

2101067909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101067909 is an equidigital number, since it uses as much as digits as its factorization.

2101067909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 2101067909 is about 45837.4073110598. The cubic root of 2101067909 is about 1280.7961983637.

The spelling of 2101067909 in words is "two billion, one hundred one million, sixty-seven thousand, nine hundred nine".