12853981 has 8 divisors (see below), whose sum is σ = 14931584. Its totient is φ = 10836720.

The previous prime is 12853979. The next prime is 12853991. The reversal of 12853981 is 18935821.

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

It is a cyclic number.

It is not a de Polignac number, because 12853981 - 2¹ = 12853979 is a prime.

It is a super-2 number, since 2×12853981² = 330449655096722, which contains 22 as substring.

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 12853981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12853991) 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, 14625 + ... + 15478.

It is an arithmetic number, because the mean of its divisors is an integer number (1866448).

Almost surely, 2^12853981 is an apocalyptic number.

It is an amenable number.

12853981 is a deficient number, since it is larger than the sum of its proper divisors (2077603).

12853981 is an equidigital number, since it uses as much as digits as its factorization.

12853981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30171.

The product of its digits is 17280, while the sum is 37.

The square root of 12853981 is about 3585.2449009796. The cubic root of 12853981 is about 234.2497941269.

The spelling of 12853981 in words is "twelve million, eight hundred fifty-three thousand, nine hundred eighty-one".