138464603 has 4 divisors (see below), whose sum is σ = 138857208. Its totient is φ = 138072000.

The previous prime is 138464597. The next prime is 138464639. The reversal of 138464603 is 306464831.

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 138464603 - 2⁴ = 138464587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138464203) 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, 195773 + ... + 196478.

It is an arithmetic number, because the mean of its divisors is an integer number (34714302).

Almost surely, 2^138464603 is an apocalyptic number.

138464603 is a deficient number, since it is larger than the sum of its proper divisors (392605).

138464603 is an equidigital number, since it uses as much as digits as its factorization.

138464603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392604.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 138464603 is about 11767.0983254157. The cubic root of 138464603 is about 517.3442044651.

The spelling of 138464603 in words is "one hundred thirty-eight million, four hundred sixty-four thousand, six hundred three".