12981493 has 8 divisors (see below), whose sum is σ = 14890688. Its totient is φ = 11085984.

The previous prime is 12981491. The next prime is 12981511. The reversal of 12981493 is 39418921.

12981493 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12981493 - 2¹ = 12981491 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 (12981491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1296 + ... + 5257.

It is an arithmetic number, because the mean of its divisors is an integer number (1861336).

Almost surely, 2^12981493 is an apocalyptic number.

It is an amenable number.

12981493 is a deficient number, since it is larger than the sum of its proper divisors (1909195).

12981493 is an equidigital number, since it uses as much as digits as its factorization.

12981493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6843.

The product of its digits is 15552, while the sum is 37.

The square root of 12981493 is about 3602.9839022677. The cubic root of 12981493 is about 235.0218359067.

The spelling of 12981493 in words is "twelve million, nine hundred eighty-one thousand, four hundred ninety-three".