16205770349 has 2 divisors, whose sum is σ = 16205770350. Its totient is φ = 16205770348.

The previous prime is 16205770327. The next prime is 16205770379. The reversal of 16205770349 is 94307750261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8893810249 + 7311960100 = 94307^2 + 85510^2 .

It is an emirp because it is prime and its reverse (94307750261) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16205770349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16205770379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8102885174 + 8102885175.

It is an arithmetic number, because the mean of its divisors is an integer number (8102885175).

Almost surely, 2^16205770349 is an apocalyptic number.

It is an amenable number.

16205770349 is a deficient number, since it is larger than the sum of its proper divisors (1).

16205770349 is an equidigital number, since it uses as much as digits as its factorization.

16205770349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 16205770349 in words is "sixteen billion, two hundred five million, seven hundred seventy thousand, three hundred forty-nine".