1388524748 has 24 divisors (see below), whose sum is σ = 2617919472. Its totient is φ = 640592064.

The previous prime is 1388524747. The next prime is 1388524771. The reversal of 1388524748 is 8474258831.

It is a junction number, because it is equal to n+sod(n) for n = 1388524696 and 1388524705.

It is not an unprimeable number, because it can be changed into a prime (1388524741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181211 + ... + 188717.

It is an arithmetic number, because the mean of its divisors is an integer number (109079978).

Almost surely, 2^1388524748 is an apocalyptic number.

It is an amenable number.

1388524748 is a deficient number, since it is larger than the sum of its proper divisors (1229394724).

1388524748 is a wasteful number, since it uses less digits than its factorization.

1388524748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11081 (or 11079 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 50.

The square root of 1388524748 is about 37262.9138420494. The cubic root of 1388524748 is about 1115.6240677837.

The spelling of 1388524748 in words is "one billion, three hundred eighty-eight million, five hundred twenty-four thousand, seven hundred forty-eight".