800152109 has 2 divisors, whose sum is σ = 800152110. Its totient is φ = 800152108.

The previous prime is 800152103. The next prime is 800152139. The reversal of 800152109 is 901251008.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 737394025 + 62758084 = 27155^2 + 7922^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-800152109 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 (800152103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400076054 + 400076055.

It is an arithmetic number, because the mean of its divisors is an integer number (400076055).

Almost surely, 2^800152109 is an apocalyptic number.

It is an amenable number.

800152109 is a deficient number, since it is larger than the sum of its proper divisors (1).

800152109 is an equidigital number, since it uses as much as digits as its factorization.

800152109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 800152109 is about 28286.9600522926. The cubic root of 800152109 is about 928.3765986137.

The spelling of 800152109 in words is "eight hundred million, one hundred fifty-two thousand, one hundred nine".