186668686849 has 8 divisors (see below), whose sum is σ = 195113204352. Its totient is φ = 178251543360.

The previous prime is 186668686843. The next prime is 186668686861. The reversal of 186668686849 is 948686866681.

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 186668686849 - 2⁵ = 186668686817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (186668686843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6829557 + ... + 6856834.

It is an arithmetic number, because the mean of its divisors is an integer number (24389150544).

Almost surely, 2^186668686849 is an apocalyptic number.

It is an amenable number.

186668686849 is a deficient number, since it is larger than the sum of its proper divisors (8444517503).

186668686849 is a wasteful number, since it uses less digits than its factorization.

186668686849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13687007.

The product of its digits is 1146617856, while the sum is 76.

The spelling of 186668686849 in words is "one hundred eighty-six billion, six hundred sixty-eight million, six hundred eighty-six thousand, eight hundred forty-nine".