1338331165 has 8 divisors (see below), whose sum is σ = 1608387768. Its totient is φ = 1069071360.

The previous prime is 1338331151. The next prime is 1338331289. The reversal of 1338331165 is 5611338331.

It can be written as a sum of positive squares in 4 ways, for example, as 161604 + 1338169561 = 402^2 + 36581^2 .

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

It is not a de Polignac number, because 1338331165 - 2¹⁵ = 1338298397 is a prime.

It is a super-2 number, since 2×1338331165² = 3582260614420514450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1338331165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195496 + ... + 202225.

It is an arithmetic number, because the mean of its divisors is an integer number (201048471).

Almost surely, 2^1338331165 is an apocalyptic number.

It is an amenable number.

1338331165 is a deficient number, since it is larger than the sum of its proper divisors (270056603).

1338331165 is an equidigital number, since it uses as much as digits as its factorization.

1338331165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398399.

The product of its digits is 19440, while the sum is 34.

The square root of 1338331165 is about 36583.2087849057. The cubic root of 1338331165 is about 1102.0159079854.

Adding to 1338331165 its reverse (5611338331), we get a palindrome (6949669496).

The spelling of 1338331165 in words is "one billion, three hundred thirty-eight million, three hundred thirty-one thousand, one hundred sixty-five".