3218507916 has 96 divisors (see below), whose sum is σ = 8398860288. Its totient is φ = 952577280.

The previous prime is 3218507833. The next prime is 3218507927. The reversal of 3218507916 is 6197058123.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 834705 + ... + 838551.

It is an arithmetic number, because the mean of its divisors is an integer number (87488128).

Almost surely, 2^3218507916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3218507916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4199430144).

3218507916 is an abundant number, since it is smaller than the sum of its proper divisors (5180352372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3218507916 is a wasteful number, since it uses less digits than its factorization.

3218507916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4071 (or 4069 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 3218507916 is about 56731.8950503154. The cubic root of 3218507916 is about 1476.4481292183.

The spelling of 3218507916 in words is "three billion, two hundred eighteen million, five hundred seven thousand, nine hundred sixteen".