9486178138 has 4 divisors (see below), whose sum is σ = 14229267210. Its totient is φ = 4743089068.

The previous prime is 9486178111. The next prime is 9486178171. The reversal of 9486178138 is 8318716849.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8506926289 + 979251849 = 92233^2 + 31293^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2371544533 + ... + 2371544536.

Almost surely, 2^9486178138 is an apocalyptic number.

9486178138 is a deficient number, since it is larger than the sum of its proper divisors (4743089072).

9486178138 is a wasteful number, since it uses less digits than its factorization.

9486178138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4743089071.

The product of its digits is 2322432, while the sum is 55.

The square root of 9486178138 is about 97397.0129829452. The cubic root of 9486178138 is about 2116.8841537769.

The spelling of 9486178138 in words is "nine billion, four hundred eighty-six million, one hundred seventy-eight thousand, one hundred thirty-eight".