1338315889 has 3 divisors (see below), whose sum is σ = 1338352473. Its totient is φ = 1338279306.

The previous prime is 1338315841. The next prime is 1338315893. The reversal of 1338315889 is 9885138331.

The square root of 1338315889 is 36583.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9885138331 = 29 ⋅340866839.

It is not a de Polignac number, because 1338315889 - 2²³ = 1329927281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1338315899) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 18292 + ... + 54874.

It is an arithmetic number, because the mean of its divisors is an integer number (446117491).

Almost surely, 2^1338315889 is an apocalyptic number.

1338315889 is the 36583-rd square number.

1338315889 is the 18292-nd centered octagonal number.

It is an amenable number.

1338315889 is a deficient number, since it is larger than the sum of its proper divisors (36584).

1338315889 is an frugal number, since it uses more digits than its factorization.

1338315889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73166 (or 36583 counting only the distinct ones).

The product of its digits is 622080, while the sum is 49.

The cubic root of 1338315889 is about 1102.0117150872.

Multiplying 1338315889 by its sum of digits (49), we get a square (65577478561 = 256081²).

The spelling of 1338315889 in words is "one billion, three hundred thirty-eight million, three hundred fifteen thousand, eight hundred eighty-nine".