3642218308 has 12 divisors (see below), whose sum is σ = 6382133100. Its totient is φ = 1818751712.

The previous prime is 3642218297. The next prime is 3642218309. The reversal of 3642218308 is 8038122463.

It can be written as a sum of positive squares in 2 ways, for example, as 1999699524 + 1642518784 = 44718^2 + 40528^2 .

It is not an unprimeable number, because it can be changed into a prime (3642218309) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 585883 + ... + 592066.

It is an arithmetic number, because the mean of its divisors is an integer number (531844425).

Almost surely, 2^3642218308 is an apocalyptic number.

It is an amenable number.

3642218308 is a deficient number, since it is larger than the sum of its proper divisors (2739914792).

3642218308 is a wasteful number, since it uses less digits than its factorization.

3642218308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178726 (or 1178724 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 3642218308 is about 60350.7937644568. The cubic root of 3642218308 is about 1538.5867604917.

The spelling of 3642218308 in words is "three billion, six hundred forty-two million, two hundred eighteen thousand, three hundred eight".