4957343581 has 2 divisors, whose sum is σ = 4957343582. Its totient is φ = 4957343580.

The previous prime is 4957343569. The next prime is 4957343591. The reversal of 4957343581 is 1853437594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3600600025 + 1356743556 = 60005^2 + 36834^2 .

It is a cyclic number.

It is not a de Polignac number, because 4957343581 - 2⁷ = 4957343453 is a prime.

It is a super-2 number, since 2×4957343581² = 49150510760163807122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4957343551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2478671790 + 2478671791.

It is an arithmetic number, because the mean of its divisors is an integer number (2478671791).

Almost surely, 2^4957343581 is an apocalyptic number.

It is an amenable number.

4957343581 is a deficient number, since it is larger than the sum of its proper divisors (1).

4957343581 is an equidigital number, since it uses as much as digits as its factorization.

4957343581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 49.

The square root of 4957343581 is about 70408.4056132505. The cubic root of 4957343581 is about 1705.0992888576.

The spelling of 4957343581 in words is "four billion, nine hundred fifty-seven million, three hundred forty-three thousand, five hundred eighty-one".