3218654618 has 4 divisors (see below), whose sum is σ = 4827981930. Its totient is φ = 1609327308.

The previous prime is 3218654617. The next prime is 3218654629. The reversal of 3218654618 is 8164568123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8164568123 = 389 ⋅20988607.

It can be written as a sum of positive squares in only one way, i.e., 2745026449 + 473628169 = 52393^2 + 21763^2 .

It is not an unprimeable number, because it can be changed into a prime (3218654617) 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 as a sum of consecutive naturals, namely, 804663653 + ... + 804663656.

Almost surely, 2^3218654618 is an apocalyptic number.

3218654618 is a deficient number, since it is larger than the sum of its proper divisors (1609327312).

3218654618 is a wasteful number, since it uses less digits than its factorization.

3218654618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609327311.

The product of its digits is 276480, while the sum is 44.

The square root of 3218654618 is about 56733.1879767037. The cubic root of 3218654618 is about 1476.4705614145.

The spelling of 3218654618 in words is "three billion, two hundred eighteen million, six hundred fifty-four thousand, six hundred eighteen".