1667247313 has 4 divisors (see below), whose sum is σ = 1682001828. Its totient is φ = 1652492800.

The previous prime is 1667247277. The next prime is 1667247367. The reversal of 1667247313 is 3137427661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3137427661 = 15733 ⋅199417.

It can be written as a sum of positive squares in 2 ways, for example, as 149989009 + 1517258304 = 12247^2 + 38952^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1667247313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1667241313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7377088 + ... + 7377313.

It is an arithmetic number, because the mean of its divisors is an integer number (420500457).

Almost surely, 2^1667247313 is an apocalyptic number.

It is an amenable number.

1667247313 is a deficient number, since it is larger than the sum of its proper divisors (14754515).

1667247313 is a wasteful number, since it uses less digits than its factorization.

1667247313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14754514.

The product of its digits is 127008, while the sum is 40.

The square root of 1667247313 is about 40831.9398632982. The cubic root of 1667247313 is about 1185.7687719807.

The spelling of 1667247313 in words is "one billion, six hundred sixty-seven million, two hundred forty-seven thousand, three hundred thirteen".