1388975133 has 16 divisors (see below), whose sum is σ = 2279344256. Its totient is φ = 732646080.

The previous prime is 1388975117. The next prime is 1388975141. The reversal of 1388975133 is 3315798831.

It is not a de Polignac number, because 1388975133 - 2⁴ = 1388975117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388975173) 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 15 ways as a sum of consecutive naturals, for example, 2543638 + ... + 2544183.

It is an arithmetic number, because the mean of its divisors is an integer number (142459016).

Almost surely, 2^1388975133 is an apocalyptic number.

1388975133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1388975133 is a deficient number, since it is larger than the sum of its proper divisors (890369123).

1388975133 is a wasteful number, since it uses less digits than its factorization.

1388975133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5087844.

The product of its digits is 544320, while the sum is 48.

The square root of 1388975133 is about 37268.9566932051. The cubic root of 1388975133 is about 1115.7446768522.

The spelling of 1388975133 in words is "one billion, three hundred eighty-eight million, nine hundred seventy-five thousand, one hundred thirty-three".