38139603 has 4 divisors (see below), whose sum is σ = 50852808. Its totient is φ = 25426400.

The previous prime is 38139601. The next prime is 38139613. The reversal of 38139603 is 30693183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30693183 = 3 ⋅10231061.

It is a cyclic number.

It is not a de Polignac number, because 38139603 - 2¹ = 38139601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38139601) 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, 6356598 + ... + 6356603.

It is an arithmetic number, because the mean of its divisors is an integer number (12713202).

Almost surely, 2^38139603 is an apocalyptic number.

38139603 is a deficient number, since it is larger than the sum of its proper divisors (12713205).

38139603 is a wasteful number, since it uses less digits than its factorization.

38139603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12713204.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 38139603 is about 6175.7269207762. The cubic root of 38139603 is about 336.6087409190.

The spelling of 38139603 in words is "thirty-eight million, one hundred thirty-nine thousand, six hundred three".