1338143817 has 8 divisors (see below), whose sum is σ = 1788642720. Its totient is φ = 889870400.

The previous prime is 1338143783. The next prime is 1338143857. The reversal of 1338143817 is 7183418331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1338143817 - 2⁷ = 1338143689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1338143857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554967 + ... + 557372.

It is an arithmetic number, because the mean of its divisors is an integer number (223580340).

Almost surely, 2^1338143817 is an apocalyptic number.

It is an amenable number.

1338143817 is a deficient number, since it is larger than the sum of its proper divisors (450498903).

1338143817 is a wasteful number, since it uses less digits than its factorization.

1338143817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112743.

The product of its digits is 48384, while the sum is 39.

The square root of 1338143817 is about 36580.6481216503. The cubic root of 1338143817 is about 1101.9644832169.

The spelling of 1338143817 in words is "one billion, three hundred thirty-eight million, one hundred forty-three thousand, eight hundred seventeen".