3218681842 has 32 divisors (see below), whose sum is σ = 5148582912. Its totient is φ = 1503888384.

The previous prime is 3218681821. The next prime is 3218681849. The reversal of 3218681842 is 2481868123.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3218681849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5302303 + ... + 5302909.

It is an arithmetic number, because the mean of its divisors is an integer number (160893216).

Almost surely, 2^3218681842 is an apocalyptic number.

3218681842 is a deficient number, since it is larger than the sum of its proper divisors (1929901070).

3218681842 is a wasteful number, since it uses less digits than its factorization.

3218681842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482.

The product of its digits is 147456, while the sum is 43.

The square root of 3218681842 is about 56733.4279063058. The cubic root of 3218681842 is about 1476.4747241601.

The spelling of 3218681842 in words is "three billion, two hundred eighteen million, six hundred eighty-one thousand, eight hundred forty-two".