866254184349 has 8 divisors (see below), whose sum is σ = 1174581945120. Its totient is φ = 567714606576.

The previous prime is 866254184273. The next prime is 866254184353. The reversal of 866254184349 is 943481452668.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-866254184349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 866254184292 and 866254184301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866254184359) 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, 2447045542 + ... + 2447045895.

It is an arithmetic number, because the mean of its divisors is an integer number (146822743140).

Almost surely, 2^866254184349 is an apocalyptic number.

It is an amenable number.

866254184349 is a deficient number, since it is larger than the sum of its proper divisors (308327760771).

866254184349 is a wasteful number, since it uses less digits than its factorization.

866254184349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4894091499.

The product of its digits is 39813120, while the sum is 60.

The spelling of 866254184349 in words is "eight hundred sixty-six billion, two hundred fifty-four million, one hundred eighty-four thousand, three hundred forty-nine".