338228664491 has 2 divisors, whose sum is σ = 338228664492. Its totient is φ = 338228664490.

The previous prime is 338228664469. The next prime is 338228664517. The reversal of 338228664491 is 194466822833.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 338228664491 - 2⁶ = 338228664427 is a prime.

It is a super-2 number, since 2×338228664491² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (338228664401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169114332245 + 169114332246.

It is an arithmetic number, because the mean of its divisors is an integer number (169114332246).

Almost surely, 2^338228664491 is an apocalyptic number.

338228664491 is a deficient number, since it is larger than the sum of its proper divisors (1).

338228664491 is an equidigital number, since it uses as much as digits as its factorization.

338228664491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11943936, while the sum is 56.

The spelling of 338228664491 in words is "three hundred thirty-eight billion, two hundred twenty-eight million, six hundred sixty-four thousand, four hundred ninety-one".