8214851805 has 8 divisors (see below), whose sum is σ = 13143762912. Its totient is φ = 4381254288.

The previous prime is 8214851753. The next prime is 8214851861. The reversal of 8214851805 is 5081584128.

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

It is not a de Polignac number, because 8214851805 - 2²³ = 8206463197 is a prime.

It is a super-2 number, since 2×8214851805² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273828379 + ... + 273828408.

It is an arithmetic number, because the mean of its divisors is an integer number (1642970364).

Almost surely, 2^8214851805 is an apocalyptic number.

It is an amenable number.

8214851805 is a deficient number, since it is larger than the sum of its proper divisors (4928911107).

8214851805 is a wasteful number, since it uses less digits than its factorization.

8214851805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547656795.

The product of its (nonzero) digits is 102400, while the sum is 42.

The square root of 8214851805 is about 90635.8196575725. The cubic root of 8214851805 is about 2017.7463842610.

The spelling of 8214851805 in words is "eight billion, two hundred fourteen million, eight hundred fifty-one thousand, eight hundred five".