4644863957 has 2 divisors, whose sum is σ = 4644863958. Its totient is φ = 4644863956.

The previous prime is 4644863941. The next prime is 4644864017. The reversal of 4644863957 is 7593684464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3203446801 + 1441417156 = 56599^2 + 37966^2 .

It is a cyclic number.

It is not a de Polignac number, because 4644863957 - 2⁴ = 4644863941 is a prime.

It is a super-2 number, since 2×4644863957² = 43149522358075395698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4644863917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2322431978 + 2322431979.

It is an arithmetic number, because the mean of its divisors is an integer number (2322431979).

Almost surely, 2^4644863957 is an apocalyptic number.

It is an amenable number.

4644863957 is a deficient number, since it is larger than the sum of its proper divisors (1).

4644863957 is an equidigital number, since it uses as much as digits as its factorization.

4644863957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17418240, while the sum is 56.

The square root of 4644863957 is about 68153.2387858420. The cubic root of 4644863957 is about 1668.4927843968.

The spelling of 4644863957 in words is "four billion, six hundred forty-four million, eight hundred sixty-three thousand, nine hundred fifty-seven".