138888753 has 8 divisors (see below), whose sum is σ = 189491808. Its totient is φ = 90439104.

The previous prime is 138888707. The next prime is 138888767. The reversal of 138888753 is 357888831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138888753 - 2¹⁰ = 138887729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138888696 and 138888705.

It is not an unprimeable number, because it can be changed into a prime (138888703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538200 + ... + 538457.

It is an arithmetic number, because the mean of its divisors is an integer number (23686476).

Almost surely, 2^138888753 is an apocalyptic number.

It is an amenable number.

138888753 is a deficient number, since it is larger than the sum of its proper divisors (50603055).

138888753 is a wasteful number, since it uses less digits than its factorization.

138888753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076703.

The product of its digits is 1290240, while the sum is 51.

The square root of 138888753 is about 11785.1072544971. The cubic root of 138888753 is about 517.8719154302.

The spelling of 138888753 in words is "one hundred thirty-eight million, eight hundred eighty-eight thousand, seven hundred fifty-three".