8381782997 has 8 divisors (see below), whose sum is σ = 9759920256. Its totient is φ = 7048830672.

The previous prime is 8381782991. The next prime is 8381783017. The reversal of 8381782997 is 7992871838.

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 8381782997 - 2¹² = 8381778901 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 (8381782991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11295833 + ... + 11296574.

It is an arithmetic number, because the mean of its divisors is an integer number (1219990032).

Almost surely, 2^8381782997 is an apocalyptic number.

It is an amenable number.

8381782997 is a deficient number, since it is larger than the sum of its proper divisors (1378137259).

8381782997 is a wasteful number, since it uses less digits than its factorization.

8381782997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22592467.

The product of its digits is 12192768, while the sum is 62.

The square root of 8381782997 is about 91552.0780594302. The cubic root of 8381782997 is about 2031.3221504098.

The spelling of 8381782997 in words is "eight billion, three hundred eighty-one million, seven hundred eighty-two thousand, nine hundred ninety-seven".