138375675 has 48 divisors (see below), whose sum is σ = 263004000. Its totient is φ = 71245440.

The previous prime is 138375673. The next prime is 138375683. The reversal of 138375675 is 576573831.

138375675 is a `hidden beast` number, since 1 + 3 + 83 + 7 + 567 + 5 = 666.

It is not a de Polignac number, because 138375675 - 2¹ = 138375673 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 138375675.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138375673) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16041 + ... + 23109.

It is an arithmetic number, because the mean of its divisors is an integer number (5479250).

Almost surely, 2^138375675 is an apocalyptic number.

138375675 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138375675 is a deficient number, since it is larger than the sum of its proper divisors (124628325).

138375675 is a wasteful number, since it uses less digits than its factorization.

138375675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7117 (or 7106 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The square root of 138375675 is about 11763.3190469357. The cubic root of 138375675 is about 517.2334270846.

It can be divided in two parts, 1383756 and 75, that added together give a palindrome (1383831).

The spelling of 138375675 in words is "one hundred thirty-eight million, three hundred seventy-five thousand, six hundred seventy-five".