3721201540 has 24 divisors (see below), whose sum is σ = 8930884032. Its totient is φ = 1275840480.

The previous prime is 3721201513. The next prime is 3721201571. The reversal of 3721201540 is 451021273.

It is a happy number.

3721201540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13289866 + ... + 13290145.

It is an arithmetic number, because the mean of its divisors is an integer number (372120168).

Almost surely, 2^3721201540 is an apocalyptic number.

It is an amenable number.

3721201540 is an abundant number, since it is smaller than the sum of its proper divisors (5209682492).

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

3721201540 is a wasteful number, since it uses less digits than its factorization.

3721201540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26580027 (or 26580025 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 3721201540 is about 61001.6519448449. The cubic root of 3721201540 is about 1549.6289836926.

The spelling of 3721201540 in words is "three billion, seven hundred twenty-one million, two hundred one thousand, five hundred forty".