9100813 has 2 divisors, whose sum is σ = 9100814. Its totient is φ = 9100812.

The previous prime is 9100787. The next prime is 9100843. The reversal of 9100813 is 3180019.

9100813 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6135529 + 2965284 = 2477^2 + 1722^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9100813 is a prime.

9100813 is a modest number, since divided by 813 gives 91 as remainder.

9100813 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9100843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4550406 + 4550407.

It is an arithmetic number, because the mean of its divisors is an integer number (4550407).

Almost surely, 2^9100813 is an apocalyptic number.

It is an amenable number.

9100813 is a deficient number, since it is larger than the sum of its proper divisors (1).

9100813 is an equidigital number, since it uses as much as digits as its factorization.

9100813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 9100813 is about 3016.7553762279. The cubic root of 9100813 is about 208.7821650748.

The spelling of 9100813 in words is "nine million, one hundred thousand, eight hundred thirteen".