3138195349 has 4 divisors (see below), whose sum is σ = 3197406636. Its totient is φ = 3078984064.

The previous prime is 3138195343. The next prime is 3138195353. The reversal of 3138195349 is 9435918313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9435918313 = 673 ⋅14020681.

It can be written as a sum of positive squares in 2 ways, for example, as 2758140324 + 380055025 = 52518^2 + 19495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3138195349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3138195299 and 3138195308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138195343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29605564 + ... + 29605669.

It is an arithmetic number, because the mean of its divisors is an integer number (799351659).

Almost surely, 2^3138195349 is an apocalyptic number.

It is an amenable number.

3138195349 is a deficient number, since it is larger than the sum of its proper divisors (59211287).

3138195349 is an equidigital number, since it uses as much as digits as its factorization.

3138195349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59211286.

The product of its digits is 349920, while the sum is 46.

The square root of 3138195349 is about 56019.5979010917. The cubic root of 3138195349 is about 1464.0637627192.

The spelling of 3138195349 in words is "three billion, one hundred thirty-eight million, one hundred ninety-five thousand, three hundred forty-nine".