809886853919 has 8 divisors (see below), whose sum is σ = 951475464912. Its totient is φ = 679625331840.

The previous prime is 809886853903. The next prime is 809886853921. The reversal of 809886853919 is 919358688908.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 809886853919 - 2⁴ = 809886853903 is a prime.

It is a super-2 number, since 2×809886853919² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809886853969) 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 7 ways as a sum of consecutive naturals, for example, 2831772074 + ... + 2831772359.

It is an arithmetic number, because the mean of its divisors is an integer number (118934433114).

Almost surely, 2^809886853919 is an apocalyptic number.

809886853919 is a deficient number, since it is larger than the sum of its proper divisors (141588610993).

809886853919 is a wasteful number, since it uses less digits than its factorization.

809886853919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5663544457.

The product of its (nonzero) digits is 268738560, while the sum is 74.

The spelling of 809886853919 in words is "eight hundred nine billion, eight hundred eighty-six million, eight hundred fifty-three thousand, nine hundred nineteen".