1338615503 has 4 divisors (see below), whose sum is σ = 1338699120. Its totient is φ = 1338531888.

The previous prime is 1338615491. The next prime is 1338615511. The reversal of 1338615503 is 3055168331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3055168331 = 83 ⋅36809257.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1338615503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338615403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9443 + ... + 52596.

It is an arithmetic number, because the mean of its divisors is an integer number (334674780).

Almost surely, 2^1338615503 is an apocalyptic number.

1338615503 is a deficient number, since it is larger than the sum of its proper divisors (83617).

1338615503 is an equidigital number, since it uses as much as digits as its factorization.

1338615503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83616.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 1338615503 is about 36587.0947603113. The cubic root of 1338615503 is about 1102.0939461719.

The spelling of 1338615503 in words is "one billion, three hundred thirty-eight million, six hundred fifteen thousand, five hundred three".