3136609849 has 4 divisors (see below), whose sum is σ = 3137140260. Its totient is φ = 3136079440.

The previous prime is 3136609807. The next prime is 3136609859. The reversal of 3136609849 is 9489066313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9489066313 = 2437 ⋅3893749.

It can be written as a sum of positive squares in 2 ways, for example, as 249482025 + 2887127824 = 15795^2 + 53732^2 .

It is a cyclic number.

It is not a de Polignac number, because 3136609849 - 2²⁹ = 2599738937 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3136609859) 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, 256234 + ... + 268195.

It is an arithmetic number, because the mean of its divisors is an integer number (784285065).

Almost surely, 2^3136609849 is an apocalyptic number.

It is an amenable number.

3136609849 is a deficient number, since it is larger than the sum of its proper divisors (530411).

3136609849 is an equidigital number, since it uses as much as digits as its factorization.

3136609849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530410.

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 3136609849 is about 56005.4448156606. Note that the first 3 decimals coincide. The cubic root of 3136609849 is about 1463.8171598291.

The spelling of 3136609849 in words is "three billion, one hundred thirty-six million, six hundred nine thousand, eight hundred forty-nine".