338521369349 has 2 divisors, whose sum is σ = 338521369350. Its totient is φ = 338521369348.

The previous prime is 338521369261. The next prime is 338521369357. The reversal of 338521369349 is 943963125833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 338334172225 + 187197124 = 581665^2 + 13682^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338521369349 is a prime.

It is a super-2 number, since 2×338521369349² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 338521369294 and 338521369303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (338521369379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169260684674 + 169260684675.

It is an arithmetic number, because the mean of its divisors is an integer number (169260684675).

Almost surely, 2^338521369349 is an apocalyptic number.

It is an amenable number.

338521369349 is a deficient number, since it is larger than the sum of its proper divisors (1).

338521369349 is an equidigital number, since it uses as much as digits as its factorization.

338521369349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12597120, while the sum is 56.

The spelling of 338521369349 in words is "three hundred thirty-eight billion, five hundred twenty-one million, three hundred sixty-nine thousand, three hundred forty-nine".