818083613 has 2 divisors, whose sum is σ = 818083614. Its totient is φ = 818083612.

The previous prime is 818083597. The next prime is 818083661. The reversal of 818083613 is 316380818.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 557809924 + 260273689 = 23618^2 + 16133^2 .

It is a cyclic number.

It is not a de Polignac number, because 818083613 - 2⁴ = 818083597 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (818083663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409041806 + 409041807.

It is an arithmetic number, because the mean of its divisors is an integer number (409041807).

Almost surely, 2^818083613 is an apocalyptic number.

It is an amenable number.

818083613 is a deficient number, since it is larger than the sum of its proper divisors (1).

818083613 is an equidigital number, since it uses as much as digits as its factorization.

818083613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 818083613 is about 28602.1609847927. The cubic root of 818083613 is about 935.2604393312.

The spelling of 818083613 in words is "eight hundred eighteen million, eighty-three thousand, six hundred thirteen".