1138312138 has 8 divisors (see below), whose sum is σ = 1710864288. Its totient is φ = 568024044.

The previous prime is 1138312127. The next prime is 1138312177. The reversal of 1138312138 is 8312138311.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564756 + ... + 566767.

It is an arithmetic number, because the mean of its divisors is an integer number (213858036).

Almost surely, 2^1138312138 is an apocalyptic number.

1138312138 is a deficient number, since it is larger than the sum of its proper divisors (572552150).

1138312138 is a wasteful number, since it uses less digits than its factorization.

1138312138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132028.

The product of its digits is 3456, while the sum is 31.

The square root of 1138312138 is about 33738.8816945672. The cubic root of 1138312138 is about 1044.1281122907.

The spelling of 1138312138 in words is "one billion, one hundred thirty-eight million, three hundred twelve thousand, one hundred thirty-eight".