3219807816 has 48 divisors (see below), whose sum is σ = 8744673600. Its totient is φ = 1070271072.

The previous prime is 3219807809. The next prime is 3219807817. The reversal of 3219807816 is 6187089123.

It is not an unprimeable number, because it can be changed into a prime (3219807817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36436 + ... + 88131.

It is an arithmetic number, because the mean of its divisors is an integer number (182180700).

Almost surely, 2^3219807816 is an apocalyptic number.

3219807816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3219807816 is an abundant number, since it is smaller than the sum of its proper divisors (5524865784).

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

3219807816 is a wasteful number, since it uses less digits than its factorization.

3219807816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124938 (or 124931 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 3219807816 is about 56743.3504121849. The cubic root of 3219807816 is about 1476.6468731342.

The spelling of 3219807816 in words is "three billion, two hundred nineteen million, eight hundred seven thousand, eight hundred sixteen".