1338139258 has 32 divisors (see below), whose sum is σ = 2240265600. Its totient is φ = 595736064.

The previous prime is 1338139247. The next prime is 1338139259. The reversal of 1338139258 is 8529318331.

It is not an unprimeable number, because it can be changed into a prime (1338139259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 831891 + ... + 833497.

It is an arithmetic number, because the mean of its divisors is an integer number (70008300).

Almost surely, 2^1338139258 is an apocalyptic number.

1338139258 is a deficient number, since it is larger than the sum of its proper divisors (902126342).

1338139258 is a wasteful number, since it uses less digits than its factorization.

1338139258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934.

The product of its digits is 155520, while the sum is 43.

The square root of 1338139258 is about 36580.5858072284. The cubic root of 1338139258 is about 1101.9632317665.

The spelling of 1338139258 in words is "one billion, three hundred thirty-eight million, one hundred thirty-nine thousand, two hundred fifty-eight".