3218845819 has 12 divisors (see below), whose sum is σ = 3745458144. Its totient is φ = 2758210224.

The previous prime is 3218845813. The next prime is 3218845829. The reversal of 3218845819 is 9185488123.

It is a happy number.

It is not a de Polignac number, because 3218845819 - 2²⁵ = 3185291387 is a prime.

It is a super-2 number, since 2×3218845819² = 20721936812987561522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3218845813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214062 + ... + 228604.

It is an arithmetic number, because the mean of its divisors is an integer number (312121512).

Almost surely, 2^3218845819 is an apocalyptic number.

3218845819 is a deficient number, since it is larger than the sum of its proper divisors (526612325).

3218845819 is a wasteful number, since it uses less digits than its factorization.

3218845819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19074 (or 19067 counting only the distinct ones).

The product of its digits is 552960, while the sum is 49.

The square root of 3218845819 is about 56734.8730411905. The cubic root of 3218845819 is about 1476.4997969276.

The spelling of 3218845819 in words is "three billion, two hundred eighteen million, eight hundred forty-five thousand, eight hundred nineteen".