10981943 has 8 divisors (see below), whose sum is σ = 13211520. Its totient is φ = 8917560.

The previous prime is 10981939. The next prime is 10981951. The reversal of 10981943 is 34918901.

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 10981943 - 2² = 10981939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10981913) 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 7 ways as a sum of consecutive naturals, for example, 41153 + ... + 41418.

It is an arithmetic number, because the mean of its divisors is an integer number (1651440).

Almost surely, 2^10981943 is an apocalyptic number.

10981943 is a deficient number, since it is larger than the sum of its proper divisors (2229577).

10981943 is an equidigital number, since it uses as much as digits as its factorization.

10981943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82597.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 10981943 is about 3313.9014771112. The cubic root of 10981943 is about 222.2762502615.

The spelling of 10981943 in words is "ten million, nine hundred eighty-one thousand, nine hundred forty-three".