1388352244 has 12 divisors (see below), whose sum is σ = 2453205664. Its totient is φ = 687436344.

The previous prime is 1388352233. The next prime is 1388352269. The reversal of 1388352244 is 4422538831.

It is a junction number, because it is equal to n+sod(n) for n = 1388352197 and 1388352206.

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, 1684482 + ... + 1685305.

Almost surely, 2^1388352244 is an apocalyptic number.

It is an amenable number.

1388352244 is a deficient number, since it is larger than the sum of its proper divisors (1064853420).

1388352244 is a wasteful number, since it uses less digits than its factorization.

1388352244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3369894 (or 3369892 counting only the distinct ones).

The product of its digits is 184320, while the sum is 40.

The square root of 1388352244 is about 37260.5990826771. The cubic root of 1388352244 is about 1115.5778658502.

The spelling of 1388352244 in words is "one billion, three hundred eighty-eight million, three hundred fifty-two thousand, two hundred forty-four".