1338223769 has 4 divisors (see below), whose sum is σ = 1369345296. Its totient is φ = 1307102244.

The previous prime is 1338223753. The next prime is 1338223771. The reversal of 1338223769 is 9673228331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1338223769 - 2⁴ = 1338223753 is a prime.

It is a super-2 number, since 2×1338223769² = 3581685711833130722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1338223709) 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 3 ways as a sum of consecutive naturals, for example, 15560699 + ... + 15560784.

It is an arithmetic number, because the mean of its divisors is an integer number (342336324).

Almost surely, 2^1338223769 is an apocalyptic number.

It is an amenable number.

1338223769 is a deficient number, since it is larger than the sum of its proper divisors (31121527).

1338223769 is an equidigital number, since it uses as much as digits as its factorization.

1338223769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31121526.

The product of its digits is 326592, while the sum is 44.

The square root of 1338223769 is about 36581.7409235810. The cubic root of 1338223769 is about 1101.9864296646.

The spelling of 1338223769 in words is "one billion, three hundred thirty-eight million, two hundred twenty-three thousand, seven hundred sixty-nine".