3618424656 has 640 divisors, whose sum is σ = 13941964800. Its totient is φ = 878169600.

The previous prime is 3618424643. The next prime is 3618424661. The reversal of 3618424656 is 6564248163.

3618424656 is a `hidden beast` number, since 3 + 6 + 184 + 2 + 465 + 6 = 666.

It is a super-2 number, since 2×3618424656² = 26185993982297436672, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 116723361 + ... + 116723391.

It is an arithmetic number, because the mean of its divisors is an integer number (21784320).

Almost surely, 2^3618424656 is an apocalyptic number.

3618424656 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3618424656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6970982400).

3618424656 is an abundant number, since it is smaller than the sum of its proper divisors (10323540144).

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

3618424656 is a wasteful number, since it uses less digits than its factorization.

3618424656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 83 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 3618424656 is about 60153.3428497536. The cubic root of 3618424656 is about 1535.2290442557.

The spelling of 3618424656 in words is "three billion, six hundred eighteen million, four hundred twenty-four thousand, six hundred fifty-six".