818670819 has 12 divisors (see below), whose sum is σ = 1159548824. Its totient is φ = 513675264.

The previous prime is 818670817. The next prime is 818670833. The reversal of 818670819 is 918076818.

It is not a de Polignac number, because 818670819 - 2¹ = 818670817 is a prime.

It is a super-2 number, since 2×818670819² = 1340443819764261522, which 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 (818670817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 471262 + ... + 472995.

Almost surely, 2^818670819 is an apocalyptic number.

818670819 is a deficient number, since it is larger than the sum of its proper divisors (340878005).

818670819 is a wasteful number, since it uses less digits than its factorization.

818670819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944294 (or 944277 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 48.

The square root of 818670819 is about 28612.4242069769. The cubic root of 818670819 is about 935.4841569665.

The spelling of 818670819 in words is "eight hundred eighteen million, six hundred seventy thousand, eight hundred nineteen".