1388343668 has 12 divisors (see below), whose sum is σ = 2432173632. Its totient is φ = 693436920.

The previous prime is 1388343643. The next prime is 1388343721. The reversal of 1388343668 is 8663438831.

It is a congruent number.

It is an unprimeable number.

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, 179468 + ... + 187043.

It is an arithmetic number, because the mean of its divisors is an integer number (202681136).

Almost surely, 2^1388343668 is an apocalyptic number.

It is an amenable number.

1388343668 is a deficient number, since it is larger than the sum of its proper divisors (1043829964).

1388343668 is a wasteful number, since it uses less digits than its factorization.

1388343668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367462 (or 367460 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 50.

The square root of 1388343668 is about 37260.4840011506. The cubic root of 1388343668 is about 1115.5755688309.

The spelling of 1388343668 in words is "one billion, three hundred eighty-eight million, three hundred forty-three thousand, six hundred sixty-eight".