3664944558 has 216 divisors, whose sum is σ = 9642093552. Its totient is φ = 1001721600.

The previous prime is 3664944557. The next prime is 3664944559. The reversal of 3664944558 is 8554494663.

3664944558 is a `hidden beast` number, since 3 + 6 + 6 + 49 + 44 + 558 = 666.

It is an interprime number because it is at equal distance from previous prime (3664944557) and next prime (3664944559).

It is a super-2 number, since 2×3664944558² = 26863637226427630728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3664944551) 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 in 107 ways as a sum of consecutive naturals, for example, 35581935 + ... + 35582037.

It is an arithmetic number, because the mean of its divisors is an integer number (44639322).

Almost surely, 2^3664944558 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3664944558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4821046776).

3664944558 is an abundant number, since it is smaller than the sum of its proper divisors (5977148994).

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

3664944558 is a wasteful number, since it uses less digits than its factorization.

3664944558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 167 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 54.

The square root of 3664944558 is about 60538.7855676012. The cubic root of 3664944558 is about 1541.7802202069.

The spelling of 3664944558 in words is "three billion, six hundred sixty-four million, nine hundred forty-four thousand, five hundred fifty-eight".