3661164220 has 48 divisors (see below), whose sum is σ = 8790566400. Its totient is φ = 1254717504.

The previous prime is 3661164193. The next prime is 3661164223. The reversal of 3661164220 is 224611663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3661164223) 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 15 ways as a sum of consecutive naturals, for example, 457897 + ... + 465823.

It is an arithmetic number, because the mean of its divisors is an integer number (183136800).

Almost surely, 2^3661164220 is an apocalyptic number.

It is an amenable number.

3661164220 is an abundant number, since it is smaller than the sum of its proper divisors (5129402180).

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

3661164220 is a wasteful number, since it uses less digits than its factorization.

3661164220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11242 (or 11240 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 3661164220 is about 60507.5550654627. Note that the first 3 decimals coincide. The cubic root of 3661164220 is about 1541.2499297392.

Adding to 3661164220 its reverse (224611663), we get a palindrome (3885775883).

The spelling of 3661164220 in words is "three billion, six hundred sixty-one million, one hundred sixty-four thousand, two hundred twenty".