4643531969 has 2 divisors, whose sum is σ = 4643531970. Its totient is φ = 4643531968.

The previous prime is 4643531947. The next prime is 4643531987. The reversal of 4643531969 is 9691353464.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4417330369 + 226201600 = 66463^2 + 15040^2 .

It is a cyclic number.

It is not a de Polignac number, because 4643531969 - 2²⁰ = 4642483393 is a prime.

It is a super-2 number, since 2×4643531969² = 43124778294250033922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4643531909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2321765984 + 2321765985.

It is an arithmetic number, because the mean of its divisors is an integer number (2321765985).

Almost surely, 2^4643531969 is an apocalyptic number.

It is an amenable number.

4643531969 is a deficient number, since it is larger than the sum of its proper divisors (1).

4643531969 is an equidigital number, since it uses as much as digits as its factorization.

4643531969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2099520, while the sum is 50.

The square root of 4643531969 is about 68143.4660770936. The cubic root of 4643531969 is about 1668.3332802751. Note that the first 3 decimals are identical.

The spelling of 4643531969 in words is "four billion, six hundred forty-three million, five hundred thirty-one thousand, nine hundred sixty-nine".