138765003 has 16 divisors (see below), whose sum is σ = 207916800. Its totient is φ = 81680544.

The previous prime is 138764993. The next prime is 138765013. The reversal of 138765003 is 300567831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (138764993) and next prime (138765013).

It is not a de Polignac number, because 138765003 - 2¹³ = 138756811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138765013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76453 + ... + 78246.

It is an arithmetic number, because the mean of its divisors is an integer number (12994800).

Almost surely, 2^138765003 is an apocalyptic number.

138765003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

138765003 is a deficient number, since it is larger than the sum of its proper divisors (69151797).

138765003 is a wasteful number, since it uses less digits than its factorization.

138765003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154738.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 138765003 is about 11779.8558140582. The cubic root of 138765003 is about 517.7180616172.

The spelling of 138765003 in words is "one hundred thirty-eight million, seven hundred sixty-five thousand, three".