1388161032 has 16 divisors (see below), whose sum is σ = 3470402640. Its totient is φ = 462720336.

The previous prime is 1388161031. The next prime is 1388161039. The reversal of 1388161032 is 2301618831.

It is a junction number, because it is equal to n+sod(n) for n = 1388160984 and 1388161002.

It is not an unprimeable number, because it can be changed into a prime (1388161031) 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 in 3 ways as a sum of consecutive naturals, for example, 28919998 + ... + 28920045.

It is an arithmetic number, because the mean of its divisors is an integer number (216900165).

Almost surely, 2^1388161032 is an apocalyptic number.

1388161032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1388161032 is an abundant number, since it is smaller than the sum of its proper divisors (2082241608).

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

1388161032 is a wasteful number, since it uses less digits than its factorization.

1388161032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57840052 (or 57840048 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1388161032 is about 37258.0331203890. The cubic root of 1388161032 is about 1115.5266488603.

Adding to 1388161032 its reverse (2301618831), we get a palindrome (3689779863).

The spelling of 1388161032 in words is "one billion, three hundred eighty-eight million, one hundred sixty-one thousand, thirty-two".