465208813 has 2 divisors, whose sum is σ = 465208814. Its totient is φ = 465208812.

The previous prime is 465208781. The next prime is 465208817. The reversal of 465208813 is 318802564.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 425101924 + 40106889 = 20618^2 + 6333^2 .

It is a cyclic number.

It is not a de Polignac number, because 465208813 - 2⁵ = 465208781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (465208817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232604406 + 232604407.

It is an arithmetic number, because the mean of its divisors is an integer number (232604407).

Almost surely, 2^465208813 is an apocalyptic number.

It is an amenable number.

465208813 is a deficient number, since it is larger than the sum of its proper divisors (1).

465208813 is an equidigital number, since it uses as much as digits as its factorization.

465208813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 465208813 is about 21568.6998449142. The cubic root of 465208813 is about 774.8470391151.

The spelling of 465208813 in words is "four hundred sixty-five million, two hundred eight thousand, eight hundred thirteen".