601808109 has 64 divisors (see below), whose sum is σ = 1028966400. Its totient is φ = 305627904.

The previous prime is 601808101. The next prime is 601808113. The reversal of 601808109 is 901808106.

It is not a de Polignac number, because 601808109 - 2³ = 601808101 is a prime.

601808109 is a strobogrammatic number because it is the same when read upside-down.

It is a self number, because there is not a number n which added to its sum of digits gives 601808109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (601808101) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1960134 + ... + 1960440.

It is an arithmetic number, because the mean of its divisors is an integer number (16077600).

Almost surely, 2^601808109 is an apocalyptic number.

It is an amenable number.

601808109 is a deficient number, since it is larger than the sum of its proper divisors (427158291).

601808109 is a wasteful number, since it uses less digits than its factorization.

601808109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 601808109 is about 24531.7775344552. Note that the first 3 decimals coincide. The cubic root of 601808109 is about 844.2790480040.

The spelling of 601808109 in words is "six hundred one million, eight hundred eight thousand, one hundred nine".