1797216313 has 2 divisors, whose sum is σ = 1797216314. Its totient is φ = 1797216312.

The previous prime is 1797216299. The next prime is 1797216331. The reversal of 1797216313 is 3136127971.

Together with next prime (1797216331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1724574784 + 72641529 = 41528^2 + 8523^2 .

It is an emirp because it is prime and its reverse (3136127971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1797216313 - 2¹³ = 1797208121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1797216373) 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, 898608156 + 898608157.

It is an arithmetic number, because the mean of its divisors is an integer number (898608157).

Almost surely, 2^1797216313 is an apocalyptic number.

It is an amenable number.

1797216313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1797216313 is an equidigital number, since it uses as much as digits as its factorization.

1797216313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628, while the sum is 40.

The square root of 1797216313 is about 42393.5881118831. The cubic root of 1797216313 is about 1215.8130034852.

The spelling of 1797216313 in words is "one billion, seven hundred ninety-seven million, two hundred sixteen thousand, three hundred thirteen".