1338520903 has 4 divisors (see below), whose sum is σ = 1396717488. Its totient is φ = 1280324320.

The previous prime is 1338520889. The next prime is 1338520913. The reversal of 1338520903 is 3090258331.

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 1338520903 - 2²⁵ = 1304966471 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 (1338520913) 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, 29098258 + ... + 29098303.

It is an arithmetic number, because the mean of its divisors is an integer number (349179372).

Almost surely, 2^1338520903 is an apocalyptic number.

1338520903 is a deficient number, since it is larger than the sum of its proper divisors (58196585).

1338520903 is an equidigital number, since it uses as much as digits as its factorization.

1338520903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58196584.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 1338520903 is about 36585.8019318970. The cubic root of 1338520903 is about 1102.0679838889.

The spelling of 1338520903 in words is "one billion, three hundred thirty-eight million, five hundred twenty thousand, nine hundred three".