1388825132 has 12 divisors (see below), whose sum is σ = 2573411400. Its totient is φ = 653564736.

The previous prime is 1388825129. The next prime is 1388825147. The reversal of 1388825132 is 2315288831.

It is a self number, because there is not a number n which added to its sum of digits gives 1388825132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10211882 + ... + 10212017.

It is an arithmetic number, because the mean of its divisors is an integer number (214450950).

Almost surely, 2^1388825132 is an apocalyptic number.

It is an amenable number.

1388825132 is a deficient number, since it is larger than the sum of its proper divisors (1184586268).

1388825132 is a wasteful number, since it uses less digits than its factorization.

1388825132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20423920 (or 20423918 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The square root of 1388825132 is about 37266.9442267541. The cubic root of 1388825132 is about 1115.7045108242.

The spelling of 1388825132 in words is "one billion, three hundred eighty-eight million, eight hundred twenty-five thousand, one hundred thirty-two".