138654603 has 18 divisors (see below), whose sum is σ = 209372436. Its totient is φ = 88414392.

The previous prime is 138654587. The next prime is 138654611. The reversal of 138654603 is 306456831.

138654603 is a `hidden beast` number, since 138 + 65 + 460 + 3 = 666.

It is not a de Polignac number, because 138654603 - 2⁴ = 138654587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138654623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9801 + ... + 19322.

It is an arithmetic number, because the mean of its divisors is an integer number (11631802).

Almost surely, 2^138654603 is an apocalyptic number.

138654603 is a deficient number, since it is larger than the sum of its proper divisors (70717833).

138654603 is a wasteful number, since it uses less digits than its factorization.

138654603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29175 (or 29149 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 138654603 is about 11775.1689159859. The cubic root of 138654603 is about 517.5807281468.

The spelling of 138654603 in words is "one hundred thirty-eight million, six hundred fifty-four thousand, six hundred three".