338126389 has 2 divisors, whose sum is σ = 338126390. Its totient is φ = 338126388.

The previous prime is 338126363. The next prime is 338126407. The reversal of 338126389 is 983621833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189530289 + 148596100 = 13767^2 + 12190^2 .

It is an emirp because it is prime and its reverse (983621833) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 338126389 - 2⁵ = 338126357 is a prime.

It is a super-2 number, since 2×338126389² = 228658909876358642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (338126309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169063194 + 169063195.

It is an arithmetic number, because the mean of its divisors is an integer number (169063195).

Almost surely, 2^338126389 is an apocalyptic number.

It is an amenable number.

338126389 is a deficient number, since it is larger than the sum of its proper divisors (1).

338126389 is an equidigital number, since it uses as much as digits as its factorization.

338126389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 43.

The square root of 338126389 is about 18388.2133172312. The cubic root of 338126389 is about 696.6687907212.

The spelling of 338126389 in words is "three hundred thirty-eight million, one hundred twenty-six thousand, three hundred eighty-nine".