3661443108 has 96 divisors (see below), whose sum is σ = 10314752000. Its totient is φ = 1118927520.

The previous prime is 3661443101. The next prime is 3661443113. The reversal of 3661443108 is 8013441663.

It is a happy number.

3661443108 is a `hidden beast` number, since 3 + 6 + 614 + 4 + 31 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3661443101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34833 + ... + 92391.

Almost surely, 2^3661443108 is an apocalyptic number.

3661443108 is a gapful number since it is divisible by the number (38) 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 3661443108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5157376000).

3661443108 is an abundant number, since it is smaller than the sum of its proper divisors (6653308892).

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

3661443108 is a wasteful number, since it uses less digits than its factorization.

3661443108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57622 (or 57614 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 3661443108 is about 60509.8595932927. The cubic root of 3661443108 is about 1541.2890634838.

The spelling of 3661443108 in words is "three billion, six hundred sixty-one million, four hundred forty-three thousand, one hundred eight".