4686973821 has 16 divisors (see below), whose sum is σ = 6944745600. Its totient is φ = 3124162944.

The previous prime is 4686973817. The next prime is 4686973829. The reversal of 4686973821 is 1283796864.

It is not a de Polignac number, because 4686973821 - 2² = 4686973817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4686973829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276040 + ... + 292526.

It is an arithmetic number, because the mean of its divisors is an integer number (434046600).

Almost surely, 2^4686973821 is an apocalyptic number.

It is an amenable number.

4686973821 is a deficient number, since it is larger than the sum of its proper divisors (2257771779).

4686973821 is a wasteful number, since it uses less digits than its factorization.

4686973821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27025 (or 27019 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 4686973821 is about 68461.4769122022. The cubic root of 4686973821 is about 1673.5197521404.

The spelling of 4686973821 in words is "four billion, six hundred eighty-six million, nine hundred seventy-three thousand, eight hundred twenty-one".