3218349920 has 24 divisors (see below), whose sum is σ = 7603352064. Its totient is φ = 1287339904.

The previous prime is 3218349889. The next prime is 3218349923. The reversal of 3218349920 is 299438123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3218349923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10057184 + ... + 10057503.

It is an arithmetic number, because the mean of its divisors is an integer number (316806336).

Almost surely, 2^3218349920 is an apocalyptic number.

It is an amenable number.

3218349920 is an abundant number, since it is smaller than the sum of its proper divisors (4385002144).

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

3218349920 is a wasteful number, since it uses less digits than its factorization.

3218349920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20114702 (or 20114694 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 3218349920 is about 56730.5025537409. The cubic root of 3218349920 is about 1476.4239692948.

The spelling of 3218349920 in words is "three billion, two hundred eighteen million, three hundred forty-nine thousand, nine hundred twenty".