12918973 has 8 divisors (see below), whose sum is σ = 13132800. Its totient is φ = 12706848.

The previous prime is 12918943. The next prime is 12918979. The reversal of 12918973 is 37981921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12918973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12918979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33540 + ... + 33922.

It is an arithmetic number, because the mean of its divisors is an integer number (1641600).

Almost surely, 2^12918973 is an apocalyptic number.

It is an amenable number.

12918973 is a deficient number, since it is larger than the sum of its proper divisors (213827).

12918973 is an equidigital number, since it uses as much as digits as its factorization.

12918973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851.

The product of its digits is 27216, while the sum is 40.

The square root of 12918973 is about 3594.2972887617. The cubic root of 12918973 is about 234.6439333805.

The spelling of 12918973 in words is "twelve million, nine hundred eighteen thousand, nine hundred seventy-three".