4643531947 has 2 divisors, whose sum is σ = 4643531948. Its totient is φ = 4643531946.

The previous prime is 4643531941. The next prime is 4643531969. The reversal of 4643531947 is 7491353464.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4643531947 is a prime.

It is a super-2 number, since 2×4643531947² = 43124777885619221618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4643531897 and 4643531906.

It is not a weakly prime, because it can be changed into another prime (4643531941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2321765973 + 2321765974.

It is an arithmetic number, because the mean of its divisors is an integer number (2321765974).

Almost surely, 2^4643531947 is an apocalyptic number.

4643531947 is a deficient number, since it is larger than the sum of its proper divisors (1).

4643531947 is an equidigital number, since it uses as much as digits as its factorization.

4643531947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 46.

The square root of 4643531947 is about 68143.4659156694. The cubic root of 4643531947 is about 1668.3332776403. Note that the first 3 decimals are identical.

The spelling of 4643531947 in words is "four billion, six hundred forty-three million, five hundred thirty-one thousand, nine hundred forty-seven".