3631641980 has 24 divisors (see below), whose sum is σ = 7700495712. Its totient is φ = 1438552512.

The previous prime is 3631641973. The next prime is 3631642031. The reversal of 3631641980 is 891461363.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 879407 + ... + 883526.

It is an arithmetic number, because the mean of its divisors is an integer number (320853988).

Almost surely, 2^3631641980 is an apocalyptic number.

It is an amenable number.

3631641980 is an abundant number, since it is smaller than the sum of its proper divisors (4068853732).

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

3631641980 is a wasteful number, since it uses less digits than its factorization.

3631641980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763045 (or 1763043 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 3631641980 is about 60263.1062923245. The cubic root of 3631641980 is about 1537.0960595701.

The spelling of 3631641980 in words is "three billion, six hundred thirty-one million, six hundred forty-one thousand, nine hundred eighty".