4461638009 has 2 divisors, whose sum is σ = 4461638010. Its totient is φ = 4461638008.

The previous prime is 4461637991. The next prime is 4461638047. The reversal of 4461638009 is 9008361644.

4461638009 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4327008400 + 134629609 = 65780^2 + 11603^2 .

It is a cyclic number.

It is not a de Polignac number, because 4461638009 - 2²⁴ = 4444860793 is a prime.

It is not a weakly prime, because it can be changed into another prime (4461638059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2230819004 + 2230819005.

It is an arithmetic number, because the mean of its divisors is an integer number (2230819005).

Almost surely, 2^4461638009 is an apocalyptic number.

It is an amenable number.

4461638009 is a deficient number, since it is larger than the sum of its proper divisors (1).

4461638009 is an equidigital number, since it uses as much as digits as its factorization.

4461638009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 4461638009 is about 66795.4939273601. The cubic root of 4461638009 is about 1646.2588036044.

The spelling of 4461638009 in words is "four billion, four hundred sixty-one million, six hundred thirty-eight thousand, nine".