4935681521 has 8 divisors (see below), whose sum is σ = 5026459200. Its totient is φ = 4845141360.

The previous prime is 4935681479. The next prime is 4935681533. The reversal of 4935681521 is 1251865394.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-4935681521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4937681521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17165 + ... + 100826.

It is an arithmetic number, because the mean of its divisors is an integer number (628307400).

Almost surely, 2^4935681521 is an apocalyptic number.

It is an amenable number.

4935681521 is a deficient number, since it is larger than the sum of its proper divisors (90777679).

4935681521 is a wasteful number, since it uses less digits than its factorization.

4935681521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118759.

The product of its digits is 259200, while the sum is 44.

The square root of 4935681521 is about 70254.4057052652. The cubic root of 4935681521 is about 1702.6120768347.

The spelling of 4935681521 in words is "four billion, nine hundred thirty-five million, six hundred eighty-one thousand, five hundred twenty-one".