8684249138 has 8 divisors (see below), whose sum is σ = 13026831132. Its totient is φ = 4341972096.

The previous prime is 8684249129. The next prime is 8684249159. The reversal of 8684249138 is 8319424868.

It can be written as a sum of positive squares in 2 ways, for example, as 8636542489 + 47706649 = 92933^2 + 6907^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 8684249138.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 18506 + ... + 133082.

Almost surely, 2^8684249138 is an apocalyptic number.

8684249138 is a deficient number, since it is larger than the sum of its proper divisors (4342581994).

8684249138 is a wasteful number, since it uses less digits than its factorization.

8684249138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152476.

The product of its digits is 2654208, while the sum is 53.

The square root of 8684249138 is about 93189.3187978107. The cubic root of 8684249138 is about 2055.4681803189.

The spelling of 8684249138 in words is "eight billion, six hundred eighty-four million, two hundred forty-nine thousand, one hundred thirty-eight".