1338368123 has 4 divisors (see below), whose sum is σ = 1338629400. Its totient is φ = 1338106848.

The previous prime is 1338368117. The next prime is 1338368149. The reversal of 1338368123 is 3218638331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3218638331 = 23 ⋅139940797.

It is a cyclic number.

It is not a de Polignac number, because 1338368123 - 2¹⁰ = 1338367099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1338368153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122798 + ... + 133251.

It is an arithmetic number, because the mean of its divisors is an integer number (334657350).

Almost surely, 2^1338368123 is an apocalyptic number.

1338368123 is a deficient number, since it is larger than the sum of its proper divisors (261277).

1338368123 is an equidigital number, since it uses as much as digits as its factorization.

1338368123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261276.

The product of its digits is 62208, while the sum is 38.

The square root of 1338368123 is about 36583.7139038671. The cubic root of 1338368123 is about 1102.0260519443.

The spelling of 1338368123 in words is "one billion, three hundred thirty-eight million, three hundred sixty-eight thousand, one hundred twenty-three".