349865497841 has 2 divisors, whose sum is σ = 349865497842. Its totient is φ = 349865497840.

The previous prime is 349865497837. The next prime is 349865497847. The reversal of 349865497841 is 148794568943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 341570113600 + 8295384241 = 584440^2 + 91079^2 .

It is an emirp because it is prime and its reverse (148794568943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 349865497841 - 2² = 349865497837 is a prime.

It is a super-2 number, since 2×349865497841² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (349865497847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174932748920 + 174932748921.

It is an arithmetic number, because the mean of its divisors is an integer number (174932748921).

Almost surely, 2^349865497841 is an apocalyptic number.

It is an amenable number.

349865497841 is a deficient number, since it is larger than the sum of its proper divisors (1).

349865497841 is an equidigital number, since it uses as much as digits as its factorization.

349865497841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209018880, while the sum is 68.

The spelling of 349865497841 in words is "three hundred forty-nine billion, eight hundred sixty-five million, four hundred ninety-seven thousand, eight hundred forty-one".