458720813 has 2 divisors, whose sum is σ = 458720814. Its totient is φ = 458720812.

The previous prime is 458720803. The next prime is 458720827. The reversal of 458720813 is 318027854.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 419307529 + 39413284 = 20477^2 + 6278^2 .

It is a cyclic number.

It is not a de Polignac number, because 458720813 - 2⁴ = 458720797 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (458720803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 229360406 + 229360407.

It is an arithmetic number, because the mean of its divisors is an integer number (229360407).

Almost surely, 2^458720813 is an apocalyptic number.

It is an amenable number.

458720813 is a deficient number, since it is larger than the sum of its proper divisors (1).

458720813 is an equidigital number, since it uses as much as digits as its factorization.

458720813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 458720813 is about 21417.7686279407. The cubic root of 458720813 is about 771.2280471342.

The spelling of 458720813 in words is "four hundred fifty-eight million, seven hundred twenty thousand, eight hundred thirteen".