819140227 has 8 divisors (see below), whose sum is σ = 831168000. Its totient is φ = 807134400.

The previous prime is 819140219. The next prime is 819140233. The reversal of 819140227 is 722041918.

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

It is a cyclic number.

It is not a de Polignac number, because 819140227 - 2³ = 819140219 is a prime.

It is a super-2 number, since 2×819140227² = 1341981422979223058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 819140192 and 819140201.

It is not an unprimeable number, because it can be changed into a prime (819140207) 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 7 ways as a sum of consecutive naturals, for example, 79149 + ... + 88897.

It is an arithmetic number, because the mean of its divisors is an integer number (103896000).

Almost surely, 2^819140227 is an apocalyptic number.

819140227 is a deficient number, since it is larger than the sum of its proper divisors (12027773).

819140227 is a wasteful number, since it uses less digits than its factorization.

819140227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10973.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 819140227 is about 28620.6259016116. The cubic root of 819140227 is about 935.6629182121.

The spelling of 819140227 in words is "eight hundred nineteen million, one hundred forty thousand, two hundred twenty-seven".