800018495 has 4 divisors (see below), whose sum is σ = 960022200. Its totient is φ = 640014792.

The previous prime is 800018473. The next prime is 800018497. The reversal of 800018495 is 594810008.

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 800018495 - 2¹⁸ = 799756351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800018497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80001845 + ... + 80001854.

It is an arithmetic number, because the mean of its divisors is an integer number (240005550).

Almost surely, 2^800018495 is an apocalyptic number.

800018495 is a deficient number, since it is larger than the sum of its proper divisors (160003705).

800018495 is a wasteful number, since it uses less digits than its factorization.

800018495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160003704.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 800018495 is about 28284.5981940702. The cubic root of 800018495 is about 928.3249205162.

The spelling of 800018495 in words is "eight hundred million, eighteen thousand, four hundred ninety-five".