1388629382 has 32 divisors (see below), whose sum is σ = 2445907968. Its totient is φ = 578930976.

The previous prime is 1388629381. The next prime is 1388629427. The reversal of 1388629382 is 2839268831.

It is a self number, because there is not a number n which added to its sum of digits gives 1388629382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388629381) 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, 103568 + ... + 116204.

It is an arithmetic number, because the mean of its divisors is an integer number (76434624).

Almost surely, 2^1388629382 is an apocalyptic number.

1388629382 is a deficient number, since it is larger than the sum of its proper divisors (1057278586).

1388629382 is a wasteful number, since it uses less digits than its factorization.

1388629382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12860.

The product of its digits is 995328, while the sum is 50.

The square root of 1388629382 is about 37264.3178120840. The cubic root of 1388629382 is about 1115.6520901571.

The spelling of 1388629382 in words is "one billion, three hundred eighty-eight million, six hundred twenty-nine thousand, three hundred eighty-two".