3664442618 has 8 divisors (see below), whose sum is σ = 5508693012. Its totient is φ = 1828211616.

The previous prime is 3664442603. The next prime is 3664442627. The reversal of 3664442618 is 8162444663.

It can be written as a sum of positive squares in 2 ways, for example, as 3641277649 + 23164969 = 60343^2 + 4813^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×3664442618² = 26856279401229387848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2003705 + ... + 2005532.

Almost surely, 2^3664442618 is an apocalyptic number.

3664442618 is a deficient number, since it is larger than the sum of its proper divisors (1844250394).

3664442618 is a wasteful number, since it uses less digits than its factorization.

3664442618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4009696.

The product of its digits is 663552, while the sum is 44.

The square root of 3664442618 is about 60534.6398188673. The cubic root of 3664442618 is about 1541.7098311025.

The spelling of 3664442618 in words is "three billion, six hundred sixty-four million, four hundred forty-two thousand, six hundred eighteen".