601986109 has 2 divisors, whose sum is σ = 601986110. Its totient is φ = 601986108.

The previous prime is 601986097. The next prime is 601986157. The reversal of 601986109 is 901689106.

601986109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 581870884 + 20115225 = 24122^2 + 4485^2 .

It is a cyclic number.

It is not a de Polignac number, because 601986109 - 2¹⁹ = 601461821 is a prime.

601986109 is a strobogrammatic number because it is the same when read upside-down.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (601986809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300993054 + 300993055.

It is an arithmetic number, because the mean of its divisors is an integer number (300993055).

Almost surely, 2^601986109 is an apocalyptic number.

It is an amenable number.

601986109 is a deficient number, since it is larger than the sum of its proper divisors (1).

601986109 is an equidigital number, since it uses as much as digits as its factorization.

601986109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 601986109 is about 24535.4052136907. The cubic root of 601986109 is about 844.3622787738.

The spelling of 601986109 in words is "six hundred one million, nine hundred eighty-six thousand, one hundred nine".