138767903 has 4 divisors (see below), whose sum is σ = 142152528. Its totient is φ = 135383280.

The previous prime is 138767899. The next prime is 138767917. The reversal of 138767903 is 309767831.

138767903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138767903 - 2² = 138767899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138767953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1692251 + ... + 1692332.

It is an arithmetic number, because the mean of its divisors is an integer number (35538132).

Almost surely, 2^138767903 is an apocalyptic number.

138767903 is a deficient number, since it is larger than the sum of its proper divisors (3384625).

138767903 is an equidigital number, since it uses as much as digits as its factorization.

138767903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384624.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 138767903 is about 11779.9789049047. The cubic root of 138767903 is about 517.7216681267.

The spelling of 138767903 in words is "one hundred thirty-eight million, seven hundred sixty-seven thousand, nine hundred three".