805370159 has 4 divisors (see below), whose sum is σ = 878585640. Its totient is φ = 732154680.

The previous prime is 805370149. The next prime is 805370171. The reversal of 805370159 is 951073508.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 805370159 - 2¹⁶ = 805304623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805370149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36607724 + ... + 36607745.

It is an arithmetic number, because the mean of its divisors is an integer number (219646410).

Almost surely, 2^805370159 is an apocalyptic number.

805370159 is a deficient number, since it is larger than the sum of its proper divisors (73215481).

805370159 is a wasteful number, since it uses less digits than its factorization.

805370159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73215480.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 805370159 is about 28379.0443637555. The cubic root of 805370159 is about 930.3903086713.

The spelling of 805370159 in words is "eight hundred five million, three hundred seventy thousand, one hundred fifty-nine".