138512603 has 8 divisors (see below), whose sum is σ = 146611920. Its totient is φ = 130494240.

The previous prime is 138512597. The next prime is 138512653. The reversal of 138512603 is 306215831.

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

It is a cyclic number.

It is not a de Polignac number, because 138512603 - 2¹⁴ = 138496219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138512653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16700 + ... + 23577.

It is an arithmetic number, because the mean of its divisors is an integer number (18326490).

Almost surely, 2^138512603 is an apocalyptic number.

138512603 is a deficient number, since it is larger than the sum of its proper divisors (8099317).

138512603 is a wasteful number, since it uses less digits than its factorization.

138512603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40477.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 138512603 is about 11769.1377339209. The cubic root of 138512603 is about 517.4039782325.

The spelling of 138512603 in words is "one hundred thirty-eight million, five hundred twelve thousand, six hundred three".