3658831209 has 16 divisors (see below), whose sum is σ = 5913263040. Its totient is φ = 2217473280.

The previous prime is 3658831153. The next prime is 3658831213. The reversal of 3658831209 is 9021388563.

It is a happy number.

3658831209 is a `hidden beast` number, since 36 + 588 + 31 + 2 + 0 + 9 = 666.

3658831209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3658831209 - 2¹³ = 3658823017 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3658831279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6159352 + ... + 6159945.

It is an arithmetic number, because the mean of its divisors is an integer number (369578940).

Almost surely, 2^3658831209 is an apocalyptic number.

It is an amenable number.

3658831209 is a deficient number, since it is larger than the sum of its proper divisors (2254431831).

3658831209 is a wasteful number, since it uses less digits than its factorization.

3658831209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12319317 (or 12319311 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 3658831209 is about 60488.2733180573. The cubic root of 3658831209 is about 1540.9224822507.

The spelling of 3658831209 in words is "three billion, six hundred fifty-eight million, eight hundred thirty-one thousand, two hundred nine".