806118413 has 2 divisors, whose sum is σ = 806118414. Its totient is φ = 806118412.

The previous prime is 806118409. The next prime is 806118431. The reversal of 806118413 is 314811608.

It is a happy number.

Together with next prime (806118431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 534626884 + 271491529 = 23122^2 + 16477^2 .

It is a cyclic number.

It is not a de Polignac number, because 806118413 - 2² = 806118409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 806118413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (806118013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403059206 + 403059207.

It is an arithmetic number, because the mean of its divisors is an integer number (403059207).

Almost surely, 2^806118413 is an apocalyptic number.

It is an amenable number.

806118413 is a deficient number, since it is larger than the sum of its proper divisors (1).

806118413 is an equidigital number, since it uses as much as digits as its factorization.

806118413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 806118413 is about 28392.2245165820. The cubic root of 806118413 is about 930.6783554262.

The spelling of 806118413 in words is "eight hundred six million, one hundred eighteen thousand, four hundred thirteen".