578123993 has 2 divisors, whose sum is σ = 578123994. Its totient is φ = 578123992.

The previous prime is 578123989. The next prime is 578124013. The reversal of 578123993 is 399321875.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 347934409 + 230189584 = 18653^2 + 15172^2 .

It is a cyclic number.

It is not a de Polignac number, because 578123993 - 2² = 578123989 is a prime.

It is not a weakly prime, because it can be changed into another prime (578123983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289061996 + 289061997.

It is an arithmetic number, because the mean of its divisors is an integer number (289061997).

Almost surely, 2^578123993 is an apocalyptic number.

It is an amenable number.

578123993 is a deficient number, since it is larger than the sum of its proper divisors (1).

578123993 is an equidigital number, since it uses as much as digits as its factorization.

578123993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 47.

The square root of 578123993 is about 24044.2091365052. The cubic root of 578123993 is about 833.0549792287.

The spelling of 578123993 in words is "five hundred seventy-eight million, one hundred twenty-three thousand, nine hundred ninety-three".