981968943 has 8 divisors (see below), whose sum is σ = 1386309168. Its totient is φ = 616137344.

The previous prime is 981968921. The next prime is 981968959. The reversal of 981968943 is 349869189.

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 981968943 - 2¹³ = 981960751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981968443) 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, 9627096 + ... + 9627197.

It is an arithmetic number, because the mean of its divisors is an integer number (173288646).

Almost surely, 2^981968943 is an apocalyptic number.

981968943 is a deficient number, since it is larger than the sum of its proper divisors (404340225).

981968943 is a wasteful number, since it uses less digits than its factorization.

981968943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19254313.

The product of its digits is 3359232, while the sum is 57.

The square root of 981968943 is about 31336.3836937194. The cubic root of 981968943 is about 993.9531570566.

The spelling of 981968943 in words is "nine hundred eighty-one million, nine hundred sixty-eight thousand, nine hundred forty-three".