1138284178 has 4 divisors (see below), whose sum is σ = 1707426270. Its totient is φ = 569142088.

The previous prime is 1138284163. The next prime is 1138284187. The reversal of 1138284178 is 8714828311.

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., 941078329 + 197205849 = 30677^2 + 14043^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284571043 + ... + 284571046.

Almost surely, 2^1138284178 is an apocalyptic number.

1138284178 is a deficient number, since it is larger than the sum of its proper divisors (569142092).

1138284178 is an equidigital number, since it uses as much as digits as its factorization.

1138284178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569142091.

The product of its digits is 86016, while the sum is 43.

The square root of 1138284178 is about 33738.4673332978. The cubic root of 1138284178 is about 1044.1195633582.

The spelling of 1138284178 in words is "one billion, one hundred thirty-eight million, two hundred eighty-four thousand, one hundred seventy-eight".