3901681736 has 8 divisors (see below), whose sum is σ = 7315653270. Its totient is φ = 1950840864.

The previous prime is 3901681733. The next prime is 3901681789. The reversal of 3901681736 is 6371861093.

It can be written as a sum of positive squares in only one way, i.e., 2237857636 + 1663824100 = 47306^2 + 40790^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (3901681733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243855101 + ... + 243855116.

Almost surely, 2^3901681736 is an apocalyptic number.

It is an amenable number.

3901681736 is a deficient number, since it is larger than the sum of its proper divisors (3413971534).

3901681736 is a wasteful number, since it uses less digits than its factorization.

3901681736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487710223 (or 487710219 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 3901681736 is about 62463.4431968011. The cubic root of 3901681736 is about 1574.2871366745.

The spelling of 3901681736 in words is "three billion, nine hundred one million, six hundred eighty-one thousand, seven hundred thirty-six".