1671867313 has 4 divisors (see below), whose sum is σ = 1729517940. Its totient is φ = 1614216688.

The previous prime is 1671867299. The next prime is 1671867331. The reversal of 1671867313 is 3137681761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3137681761 = 563 ⋅5573147.

It can be written as a sum of positive squares in 2 ways, for example, as 785793024 + 886074289 = 28032^2 + 29767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1671867313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1671867313.

It is not an unprimeable number, because it can be changed into a prime (1671861313) 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, 28825270 + ... + 28825327.

It is an arithmetic number, because the mean of its divisors is an integer number (432379485).

Almost surely, 2^1671867313 is an apocalyptic number.

It is an amenable number.

1671867313 is a deficient number, since it is larger than the sum of its proper divisors (57650627).

1671867313 is an equidigital number, since it uses as much as digits as its factorization.

1671867313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57650626.

The product of its digits is 127008, while the sum is 43.

The square root of 1671867313 is about 40888.4740850035. The cubic root of 1671867313 is about 1186.8630306264.

The spelling of 1671867313 in words is "one billion, six hundred seventy-one million, eight hundred sixty-seven thousand, three hundred thirteen".