1388456852 has 6 divisors (see below), whose sum is σ = 2429799498. Its totient is φ = 694228424.

The previous prime is 1388456851. The next prime is 1388456869. The reversal of 1388456852 is 2586548831.

It can be written as a sum of positive squares in only one way, i.e., 1158449296 + 230007556 = 34036^2 + 15166^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1388456852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388456851) 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 as a sum of consecutive naturals, namely, 173557103 + ... + 173557110.

It is an arithmetic number, because the mean of its divisors is an integer number (404966583).

Almost surely, 2^1388456852 is an apocalyptic number.

It is an amenable number.

1388456852 is a deficient number, since it is larger than the sum of its proper divisors (1041342646).

1388456852 is a wasteful number, since it uses less digits than its factorization.

1388456852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347114217 (or 347114215 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 50.

The square root of 1388456852 is about 37262.0027910471. The cubic root of 1388456852 is about 1115.6058835810.

The spelling of 1388456852 in words is "one billion, three hundred eighty-eight million, four hundred fifty-six thousand, eight hundred fifty-two".