1616537226349 has 2 divisors, whose sum is σ = 1616537226350. Its totient is φ = 1616537226348.

The previous prime is 1616537226319. The next prime is 1616537226383. The reversal of 1616537226349 is 9436227356161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1412972029225 + 203565197124 = 1188685^2 + 451182^2 .

It is an emirp because it is prime and its reverse (9436227356161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1616537226349 - 2²³ = 1616528837741 is a prime.

It is a super-2 number, since 2×1616537226349² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1616537226349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1616537226319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808268613174 + 808268613175.

It is an arithmetic number, because the mean of its divisors is an integer number (808268613175).

Almost surely, 2^{1616537226349} is an apocalyptic number.

It is an amenable number.

1616537226349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616537226349 is an equidigital number, since it uses as much as digits as its factorization.

1616537226349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 55.

The spelling of 1616537226349 in words is "one trillion, six hundred sixteen billion, five hundred thirty-seven million, two hundred twenty-six thousand, three hundred forty-nine".