349519415669 has 2 divisors, whose sum is σ = 349519415670. Its totient is φ = 349519415668.

The previous prime is 349519415593. The next prime is 349519415671. The reversal of 349519415669 is 966514915943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193126849444 + 156392566225 = 439462^2 + 395465^2 .

It is a cyclic number.

It is not a de Polignac number, because 349519415669 - 2¹² = 349519411573 is a prime.

It is a super-2 number, since 2×349519415669² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 349519415671, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349519415689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174759707834 + 174759707835.

It is an arithmetic number, because the mean of its divisors is an integer number (174759707835).

Almost surely, 2^349519415669 is an apocalyptic number.

It is an amenable number.

349519415669 is a deficient number, since it is larger than the sum of its proper divisors (1).

349519415669 is an equidigital number, since it uses as much as digits as its factorization.

349519415669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31492800, while the sum is 62.

The spelling of 349519415669 in words is "three hundred forty-nine billion, five hundred nineteen million, four hundred fifteen thousand, six hundred sixty-nine".