4518638971 has 16 divisors (see below), whose sum is σ = 5635111680. Its totient is φ = 3520090080.

The previous prime is 4518638923. The next prime is 4518638977. The reversal of 4518638971 is 1798368154.

It is a cyclic number.

It is not a de Polignac number, because 4518638971 - 2¹⁷ = 4518507899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4518638977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512220 + ... + 520966.

It is an arithmetic number, because the mean of its divisors is an integer number (352194480).

Almost surely, 2^4518638971 is an apocalyptic number.

4518638971 is a deficient number, since it is larger than the sum of its proper divisors (1116472709).

4518638971 is a wasteful number, since it uses less digits than its factorization.

4518638971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15474.

The product of its digits is 1451520, while the sum is 52.

The square root of 4518638971 is about 67220.8224510828. The cubic root of 4518638971 is about 1653.2399114430.

The spelling of 4518638971 in words is "four billion, five hundred eighteen million, six hundred thirty-eight thousand, nine hundred seventy-one".