258315193 has 2 divisors, whose sum is σ = 258315194. Its totient is φ = 258315192.

The previous prime is 258315179. The next prime is 258315199. The reversal of 258315193 is 391513852.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173527929 + 84787264 = 13173^2 + 9208^2 .

It is a cyclic number.

It is not a de Polignac number, because 258315193 - 2²¹ = 256218041 is a prime.

It is not a weakly prime, because it can be changed into another prime (258315199) 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, 129157596 + 129157597.

It is an arithmetic number, because the mean of its divisors is an integer number (129157597).

Almost surely, 2^258315193 is an apocalyptic number.

It is an amenable number.

258315193 is a deficient number, since it is larger than the sum of its proper divisors (1).

258315193 is an equidigital number, since it uses as much as digits as its factorization.

258315193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 37.

The square root of 258315193 is about 16072.1869389327. The cubic root of 258315193 is about 636.8688146168.

The spelling of 258315193 in words is "two hundred fifty-eight million, three hundred fifteen thousand, one hundred ninety-three".