438353222613197 has 2 divisors, whose sum is σ = 438353222613198. Its totient is φ = 438353222613196.

The previous prime is 438353222613191. The next prime is 438353222613199. The reversal of 438353222613197 is 791316222353834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378036704103556 + 60316518509641 = 19443166^2 + 7766371^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438353222613197 is a prime.

Together with 438353222613199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438353222613191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219176611306598 + 219176611306599.

It is an arithmetic number, because the mean of its divisors is an integer number (219176611306599).

Almost surely, 2^{438353222613197} is an apocalyptic number.

It is an amenable number.

438353222613197 is a deficient number, since it is larger than the sum of its proper divisors (1).

438353222613197 is an equidigital number, since it uses as much as digits as its factorization.

438353222613197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39191040, while the sum is 59.

The spelling of 438353222613197 in words is "four hundred thirty-eight trillion, three hundred fifty-three billion, two hundred twenty-two million, six hundred thirteen thousand, one hundred ninety-seven".