857093091983 has 2 divisors, whose sum is σ = 857093091984. Its totient is φ = 857093091982.

The previous prime is 857093091977. The next prime is 857093092007. The reversal of 857093091983 is 389190390758.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 857093091983 - 2³² = 852798124687 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (857093091923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428546545991 + 428546545992.

It is an arithmetic number, because the mean of its divisors is an integer number (428546545992).

Almost surely, 2^857093091983 is an apocalyptic number.

857093091983 is a deficient number, since it is larger than the sum of its proper divisors (1).

857093091983 is an equidigital number, since it uses as much as digits as its factorization.

857093091983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14696640, while the sum is 62.

The spelling of 857093091983 in words is "eight hundred fifty-seven billion, ninety-three million, ninety-one thousand, nine hundred eighty-three".