2585197943 has 2 divisors, whose sum is σ = 2585197944. Its totient is φ = 2585197942.

The previous prime is 2585197889. The next prime is 2585197957. The reversal of 2585197943 is 3497915852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2585197943 - 2¹⁴ = 2585181559 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 (2585197243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1292598971 + 1292598972.

It is an arithmetic number, because the mean of its divisors is an integer number (1292598972).

Almost surely, 2^2585197943 is an apocalyptic number.

2585197943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2585197943 is an equidigital number, since it uses as much as digits as its factorization.

2585197943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 53.

The square root of 2585197943 is about 50844.8418524436. The cubic root of 2585197943 is about 1372.4544317062.

The spelling of 2585197943 in words is "two billion, five hundred eighty-five million, one hundred ninety-seven thousand, nine hundred forty-three".