1388334266 has 8 divisors (see below), whose sum is σ = 2271819744. Its totient is φ = 631061020.

The previous prime is 1388334263. The next prime is 1388334289. The reversal of 1388334266 is 6624338831.

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

It is not an unprimeable number, because it can be changed into a prime (1388334263) by changing a digit.

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, 31553030 + ... + 31553073.

It is an arithmetic number, because the mean of its divisors is an integer number (283977468).

Almost surely, 2^1388334266 is an apocalyptic number.

1388334266 is a deficient number, since it is larger than the sum of its proper divisors (883485478).

1388334266 is a wasteful number, since it uses less digits than its factorization.

1388334266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63106116.

The product of its digits is 497664, while the sum is 44.

The square root of 1388334266 is about 37260.3578351041. The cubic root of 1388334266 is about 1115.5730505627.

The spelling of 1388334266 in words is "one billion, three hundred eighty-eight million, three hundred thirty-four thousand, two hundred sixty-six".