1388387322 has 48 divisors (see below), whose sum is σ = 3462688320. Its totient is φ = 393823296.

The previous prime is 1388387293. The next prime is 1388387327. The reversal of 1388387322 is 2237838831.

1388387322 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1388387327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22123 + ... + 57150.

It is an arithmetic number, because the mean of its divisors is an integer number (72139340).

Almost surely, 2^1388387322 is an apocalyptic number.

1388387322 is an abundant number, since it is smaller than the sum of its proper divisors (2074300998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1388387322 is a wasteful number, since it uses less digits than its factorization.

1388387322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79427 (or 79424 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 1388387322 is about 37261.0697914056. The cubic root of 1388387322 is about 1115.5872611390.

The spelling of 1388387322 in words is "one billion, three hundred eighty-eight million, three hundred eighty-seven thousand, three hundred twenty-two".