254749679593 has 2 divisors, whose sum is σ = 254749679594. Its totient is φ = 254749679592.

The previous prime is 254749679581. The next prime is 254749679627. The reversal of 254749679593 is 395976947452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182540853504 + 72208826089 = 427248^2 + 268717^2 .

It is a cyclic number.

It is not a de Polignac number, because 254749679593 - 2⁹ = 254749679081 is a prime.

It is not a weakly prime, because it can be changed into another prime (254749679563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127374839796 + 127374839797.

It is an arithmetic number, because the mean of its divisors is an integer number (127374839797).

Almost surely, 2^254749679593 is an apocalyptic number.

It is an amenable number.

254749679593 is a deficient number, since it is larger than the sum of its proper divisors (1).

254749679593 is an equidigital number, since it uses as much as digits as its factorization.

254749679593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 514382400, while the sum is 70.

The spelling of 254749679593 in words is "two hundred fifty-four billion, seven hundred forty-nine million, six hundred seventy-nine thousand, five hundred ninety-three".