4813986921 has 16 divisors (see below), whose sum is σ = 6648513600. Its totient is φ = 3094676928.

The previous prime is 4813986893. The next prime is 4813986929. The reversal of 4813986921 is 1296893184.

It is not a de Polignac number, because 4813986921 - 2⁶ = 4813986857 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4813986929) 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, 33315 + ... + 103623.

It is an arithmetic number, because the mean of its divisors is an integer number (415532100).

Almost surely, 2^4813986921 is an apocalyptic number.

It is an amenable number.

4813986921 is a deficient number, since it is larger than the sum of its proper divisors (1834526679).

4813986921 is a wasteful number, since it uses less digits than its factorization.

4813986921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71128.

The product of its digits is 746496, while the sum is 51.

The square root of 4813986921 is about 69382.9007825415. The cubic root of 4813986921 is about 1688.5022175419.

The spelling of 4813986921 in words is "four billion, eight hundred thirteen million, nine hundred eighty-six thousand, nine hundred twenty-one".