1338344509 has 8 divisors (see below), whose sum is σ = 1372412160. Its totient is φ = 1304344800.

The previous prime is 1338344507. The next prime is 1338344521. The reversal of 1338344509 is 9054438331.

It is a happy number.

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 1338344509 - 2¹ = 1338344507 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 (1338344503) 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, 24162 + ... + 57100.

It is an arithmetic number, because the mean of its divisors is an integer number (171551520).

Almost surely, 2^1338344509 is an apocalyptic number.

It is an amenable number.

1338344509 is a deficient number, since it is larger than the sum of its proper divisors (34067651).

1338344509 is an equidigital number, since it uses as much as digits as its factorization.

1338344509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33971.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 1338344509 is about 36583.3911632041. The cubic root of 1338344509 is about 1102.0195705695.

The spelling of 1338344509 in words is "one billion, three hundred thirty-eight million, three hundred forty-four thousand, five hundred nine".