1698798313 has 2 divisors, whose sum is σ = 1698798314. Its totient is φ = 1698798312.

The previous prime is 1698798307. The next prime is 1698798317. The reversal of 1698798313 is 3138978961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1412782569 + 286015744 = 37587^2 + 16912^2 .

It is a cyclic number.

It is not a de Polignac number, because 1698798313 - 2⁵ = 1698798281 is a prime.

It is not a weakly prime, because it can be changed into another prime (1698798317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 849399156 + 849399157.

It is an arithmetic number, because the mean of its divisors is an integer number (849399157).

Almost surely, 2^1698798313 is an apocalyptic number.

It is an amenable number.

1698798313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1698798313 is an equidigital number, since it uses as much as digits as its factorization.

1698798313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 55.

The square root of 1698798313 is about 41216.4810846341. The cubic root of 1698798313 is about 1193.2019112801.

The spelling of 1698798313 in words is "one billion, six hundred ninety-eight million, seven hundred ninety-eight thousand, three hundred thirteen".