4601872921 has 2 divisors, whose sum is σ = 4601872922. Its totient is φ = 4601872920.

The previous prime is 4601872889. The next prime is 4601872927. The reversal of 4601872921 is 1292781064.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4155607296 + 446265625 = 64464^2 + 21125^2 .

It is a cyclic number.

It is not a de Polignac number, because 4601872921 - 2⁵ = 4601872889 is a prime.

It is not a weakly prime, because it can be changed into another prime (4601872927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2300936460 + 2300936461.

It is an arithmetic number, because the mean of its divisors is an integer number (2300936461).

Almost surely, 2^4601872921 is an apocalyptic number.

It is an amenable number.

4601872921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4601872921 is an equidigital number, since it uses as much as digits as its factorization.

4601872921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 4601872921 is about 67837.1057828973. The cubic root of 4601872921 is about 1663.3291828131.

The spelling of 4601872921 in words is "four billion, six hundred one million, eight hundred seventy-two thousand, nine hundred twenty-one".