38505603 has 4 divisors (see below), whose sum is σ = 51340808. Its totient is φ = 25670400.

The previous prime is 38505587. The next prime is 38505617. The reversal of 38505603 is 30650583.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 38505603 - 2⁴ = 38505587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38507603) 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 3 ways as a sum of consecutive naturals, for example, 6417598 + ... + 6417603.

It is an arithmetic number, because the mean of its divisors is an integer number (12835202).

Almost surely, 2^38505603 is an apocalyptic number.

38505603 is a deficient number, since it is larger than the sum of its proper divisors (12835205).

38505603 is a wasteful number, since it uses less digits than its factorization.

38505603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12835204.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 38505603 is about 6205.2883091763. The cubic root of 38505603 is about 337.6820504796.

It can be divided in two parts, 3850 and 5603, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 38505603 in words is "thirty-eight million, five hundred five thousand, six hundred three".