138801903 has 8 divisors (see below), whose sum is σ = 186000000. Its totient is φ = 92069208.

The previous prime is 138801899. The next prime is 138801931. The reversal of 138801903 is 309108831.

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

It is not a de Polignac number, because 138801903 - 2² = 138801899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138801953) 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, 115653 + ... + 116846.

It is an arithmetic number, because the mean of its divisors is an integer number (23250000).

Almost surely, 2^138801903 is an apocalyptic number.

138801903 is a deficient number, since it is larger than the sum of its proper divisors (47198097).

138801903 is a wasteful number, since it uses less digits than its factorization.

138801903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232701.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 138801903 is about 11781.4219430424. The cubic root of 138801903 is about 517.7639475946.

The spelling of 138801903 in words is "one hundred thirty-eight million, eight hundred one thousand, nine hundred three".