3981736201 has 9 divisors (see below), whose sum is σ = 4032665301. Its totient is φ = 3931444704.

The previous prime is 3981736183. The next prime is 3981736211. The reversal of 3981736201 is 1026371893.

The square root of 3981736201 is 63101.

It is a perfect power (a square), and thus also a powerful number.

3981736201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1823204601 + 2158531600 = 42699^2 + 46460^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3981736201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3981736211) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5615635 + ... + 5616343.

Almost surely, 2^3981736201 is an apocalyptic number.

3981736201 is the 63101-st square number.

3981736201 is the 31551-st centered octagonal number.

It is an amenable number.

3981736201 is a deficient number, since it is larger than the sum of its proper divisors (50929100).

3981736201 is an frugal number, since it uses more digits than its factorization.

3981736201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596 (or 798 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The cubic root of 3981736201 is about 1584.9813676919.

The spelling of 3981736201 in words is "three billion, nine hundred eighty-one million, seven hundred thirty-six thousand, two hundred one".