1338713457 has 16 divisors (see below), whose sum is σ = 1943688000. Its totient is φ = 816346944.

The previous prime is 1338713443. The next prime is 1338713479. The reversal of 1338713457 is 7543178331.

It is not a de Polignac number, because 1338713457 - 2¹⁹ = 1338189169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1338713417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403282 + ... + 406587.

It is an arithmetic number, because the mean of its divisors is an integer number (121480500).

Almost surely, 2^1338713457 is an apocalyptic number.

It is an amenable number.

1338713457 is a deficient number, since it is larger than the sum of its proper divisors (604974543).

1338713457 is a wasteful number, since it uses less digits than its factorization.

1338713457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809920.

The product of its digits is 211680, while the sum is 42.

The square root of 1338713457 is about 36588.4333772300. The cubic root of 1338713457 is about 1102.1208276468.

The spelling of 1338713457 in words is "one billion, three hundred thirty-eight million, seven hundred thirteen thousand, four hundred fifty-seven".