4643531957 has 4 divisors (see below), whose sum is σ = 4756788876. Its totient is φ = 4530275040.

The previous prime is 4643531947. The next prime is 4643531969. The reversal of 4643531957 is 7591353464.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 996096721 + 3647435236 = 31561^2 + 60394^2 .

It is a cyclic number.

It is not a de Polignac number, because 4643531957 - 2⁴ = 4643531941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4643531927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56628398 + ... + 56628479.

It is an arithmetic number, because the mean of its divisors is an integer number (1189197219).

Almost surely, 2^4643531957 is an apocalyptic number.

It is an amenable number.

4643531957 is a deficient number, since it is larger than the sum of its proper divisors (113256919).

4643531957 is a wasteful number, since it uses less digits than its factorization.

4643531957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113256918.

The product of its digits is 1360800, while the sum is 47.

The square root of 4643531957 is about 68143.4659890440. The cubic root of 4643531957 is about 1668.3332788379. Note that the first 3 decimals are identical.

The spelling of 4643531957 in words is "four billion, six hundred forty-three million, five hundred thirty-one thousand, nine hundred fifty-seven".