605109149 has 4 divisors (see below), whose sum is σ = 605568540. Its totient is φ = 604649760.

The previous prime is 605109143. The next prime is 605109151. The reversal of 605109149 is 941901506.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 230493124 + 374616025 = 15182^2 + 19355^2 .

It is a cyclic number.

It is not a de Polignac number, because 605109149 - 2⁸ = 605108893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605109143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227714 + ... + 230355.

It is an arithmetic number, because the mean of its divisors is an integer number (151392135).

Almost surely, 2^605109149 is an apocalyptic number.

It is an amenable number.

605109149 is a deficient number, since it is larger than the sum of its proper divisors (459391).

605109149 is a wasteful number, since it uses less digits than its factorization.

605109149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459390.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 605109149 is about 24598.9664213763. The cubic root of 605109149 is about 845.8199149276.

The spelling of 605109149 in words is "six hundred five million, one hundred nine thousand, one hundred forty-nine".