4638366861 has 16 divisors (see below), whose sum is σ = 6344647488. Its totient is φ = 3013113600.

The previous prime is 4638366841. The next prime is 4638366913. The reversal of 4638366861 is 1686638364.

It is not a de Polignac number, because 4638366861 - 2¹⁴ = 4638350477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4638366841) 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, 98860 + ... + 138021.

It is an arithmetic number, because the mean of its divisors is an integer number (396540468).

Almost surely, 2^4638366861 is an apocalyptic number.

It is an amenable number.

4638366861 is a deficient number, since it is larger than the sum of its proper divisors (1706280627).

4638366861 is a wasteful number, since it uses less digits than its factorization.

4638366861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237052.

The product of its digits is 2985984, while the sum is 51.

The square root of 4638366861 is about 68105.5567556716. The cubic root of 4638366861 is about 1667.7144755510.

The spelling of 4638366861 in words is "four billion, six hundred thirty-eight million, three hundred sixty-six thousand, eight hundred sixty-one".