138775603 has 8 divisors (see below), whose sum is σ = 139742480. Its totient is φ = 137812320.

The previous prime is 138775591. The next prime is 138775613. The reversal of 138775603 is 306577831.

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 138775603 - 2¹⁷ = 138644531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138775613) 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, 157801 + ... + 158677.

It is an arithmetic number, because the mean of its divisors is an integer number (17467810).

Almost surely, 2^138775603 is an apocalyptic number.

138775603 is a deficient number, since it is larger than the sum of its proper divisors (966877).

138775603 is an equidigital number, since it uses as much as digits as its factorization.

138775603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 138775603 is about 11780.3057260837. The cubic root of 138775603 is about 517.7312437875.

The spelling of 138775603 in words is "one hundred thirty-eight million, seven hundred seventy-five thousand, six hundred three".