805370149 has 2 divisors, whose sum is σ = 805370150. Its totient is φ = 805370148.

The previous prime is 805370131. The next prime is 805370171. The reversal of 805370149 is 941073508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 607967649 + 197402500 = 24657^2 + 14050^2 .

It is a cyclic number.

It is not a de Polignac number, because 805370149 - 2⁵ = 805370117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805370249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402685074 + 402685075.

It is an arithmetic number, because the mean of its divisors is an integer number (402685075).

Almost surely, 2^805370149 is an apocalyptic number.

It is an amenable number.

805370149 is a deficient number, since it is larger than the sum of its proper divisors (1).

805370149 is an equidigital number, since it uses as much as digits as its factorization.

805370149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 805370149 is about 28379.0441875691. The cubic root of 805370149 is about 930.3903048206.

The spelling of 805370149 in words is "eight hundred five million, three hundred seventy thousand, one hundred forty-nine".