3157446349 has 4 divisors (see below), whose sum is σ = 3166815964. Its totient is φ = 3148076736.

The previous prime is 3157446307. The next prime is 3157446389. The reversal of 3157446349 is 9436447513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9436447513 = 47 ⋅200775479.

It can be written as a sum of positive squares in 2 ways, for example, as 279123849 + 2878322500 = 16707^2 + 53650^2 .

It is a cyclic number.

It is not a de Polignac number, because 3157446349 - 2¹⁷ = 3157315277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3157446299 and 3157446308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3157446389) 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, 4684302 + ... + 4684975.

It is an arithmetic number, because the mean of its divisors is an integer number (791703991).

Almost surely, 2^3157446349 is an apocalyptic number.

It is an amenable number.

3157446349 is a deficient number, since it is larger than the sum of its proper divisors (9369615).

3157446349 is an equidigital number, since it uses as much as digits as its factorization.

3157446349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9369614.

The product of its digits is 1088640, while the sum is 46.

The square root of 3157446349 is about 56191.1589932082. The cubic root of 3157446349 is about 1467.0513879581.

The spelling of 3157446349 in words is "three billion, one hundred fifty-seven million, four hundred forty-six thousand, three hundred forty-nine".