1613112209 has 2 divisors, whose sum is σ = 1613112210. Its totient is φ = 1613112208.

The previous prime is 1613112197. The next prime is 1613112329. The reversal of 1613112209 is 9022113161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1189905025 + 423207184 = 34495^2 + 20572^2 .

It is an emirp because it is prime and its reverse (9022113161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1613112209 - 2²⁰ = 1612063633 is a prime.

It is not a weakly prime, because it can be changed into another prime (1613112509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806556104 + 806556105.

It is an arithmetic number, because the mean of its divisors is an integer number (806556105).

Almost surely, 2^1613112209 is an apocalyptic number.

It is an amenable number.

1613112209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1613112209 is an equidigital number, since it uses as much as digits as its factorization.

1613112209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1613112209 is about 40163.5681806286. The cubic root of 1613112209 is about 1172.7934345584.

The spelling of 1613112209 in words is "one billion, six hundred thirteen million, one hundred twelve thousand, two hundred nine".