1957443043 has 2 divisors, whose sum is σ = 1957443044. Its totient is φ = 1957443042.

The previous prime is 1957443041. The next prime is 1957443071. The reversal of 1957443043 is 3403447591.

It is a weak prime.

It is an emirp because it is prime and its reverse (3403447591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1957443043 - 2¹ = 1957443041 is a prime.

Together with 1957443041, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1957442987 and 1957443005.

It is not a weakly prime, because it can be changed into another prime (1957443041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978721521 + 978721522.

It is an arithmetic number, because the mean of its divisors is an integer number (978721522).

Almost surely, 2^1957443043 is an apocalyptic number.

1957443043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1957443043 is an equidigital number, since it uses as much as digits as its factorization.

1957443043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 1957443043 is about 44242.9999321927. Note that the first 4 decimals coincide. The cubic root of 1957443043 is about 1250.9205044775.

The spelling of 1957443043 in words is "one billion, nine hundred fifty-seven million, four hundred forty-three thousand, forty-three".