1366338999 has 16 divisors (see below), whose sum is σ = 1832713344. Its totient is φ = 905445600.

The previous prime is 1366338991. The next prime is 1366339033. The reversal of 1366338999 is 9998336631.

It is not a de Polignac number, because 1366338999 - 2³ = 1366338991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366338991) 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, 389644 + ... + 393134.

It is an arithmetic number, because the mean of its divisors is an integer number (114544584).

Almost surely, 2^1366338999 is an apocalyptic number.

1366338999 is a deficient number, since it is larger than the sum of its proper divisors (466374345).

1366338999 is a wasteful number, since it uses less digits than its factorization.

1366338999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4238.

The product of its digits is 5668704, while the sum is 57.

The square root of 1366338999 is about 36964.0230359197. The cubic root of 1366338999 is about 1109.6503508739.

The spelling of 1366338999 in words is "one billion, three hundred sixty-six million, three hundred thirty-eight thousand, nine hundred ninety-nine".