138675903 has 8 divisors (see below), whose sum is σ = 189201408. Its totient is φ = 90300504.

The previous prime is 138675893. The next prime is 138675917. The reversal of 138675903 is 309576831.

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

It is not a de Polignac number, because 138675903 - 2⁵ = 138675871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138675203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537375 + ... + 537632.

It is an arithmetic number, because the mean of its divisors is an integer number (23650176).

Almost surely, 2^138675903 is an apocalyptic number.

138675903 is a deficient number, since it is larger than the sum of its proper divisors (50525505).

138675903 is a wasteful number, since it uses less digits than its factorization.

138675903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075053.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 138675903 is about 11776.0733268777. The cubic root of 138675903 is about 517.6072302241.

The spelling of 138675903 in words is "one hundred thirty-eight million, six hundred seventy-five thousand, nine hundred three".