3849721000 has 64 divisors (see below), whose sum is σ = 9319050000. Its totient is φ = 1486777600.

The previous prime is 3849720989. The next prime is 3849721021. The reversal of 3849721000 is 1279483.

It can be written as a sum of positive squares in 8 ways, for example, as 472019076 + 3377701924 = 21726^2 + 58118^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37375 + ... + 95374.

Almost surely, 2^3849721000 is an apocalyptic number.

It is an amenable number.

3849721000 is an abundant number, since it is smaller than the sum of its proper divisors (5469329000).

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

3849721000 is a wasteful number, since it uses less digits than its factorization.

3849721000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132799 (or 132785 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 3849721000 is about 62046.1199431520. The cubic root of 3849721000 is about 1567.2673467458.

The spelling of 3849721000 in words is "three billion, eight hundred forty-nine million, seven hundred twenty-one thousand".