1338649583 has 2 divisors, whose sum is σ = 1338649584. Its totient is φ = 1338649582.

The previous prime is 1338649573. The next prime is 1338649679. The reversal of 1338649583 is 3859468331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1338649583 - 2¹⁰ = 1338648559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1338649523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669324791 + 669324792.

It is an arithmetic number, because the mean of its divisors is an integer number (669324792).

Almost surely, 2^1338649583 is an apocalyptic number.

1338649583 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338649583 is an equidigital number, since it uses as much as digits as its factorization.

1338649583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 50.

The square root of 1338649583 is about 36587.5604953378. The cubic root of 1338649583 is about 1102.1032988807.

The spelling of 1338649583 in words is "one billion, three hundred thirty-eight million, six hundred forty-nine thousand, five hundred eighty-three".