258430693 has 2 divisors, whose sum is σ = 258430694. Its totient is φ = 258430692.

The previous prime is 258430637. The next prime is 258430717. The reversal of 258430693 is 396034852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209178369 + 49252324 = 14463^2 + 7018^2 .

It is a cyclic number.

It is not a de Polignac number, because 258430693 - 2⁹ = 258430181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258430633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129215346 + 129215347.

It is an arithmetic number, because the mean of its divisors is an integer number (129215347).

Almost surely, 2^258430693 is an apocalyptic number.

It is an amenable number.

258430693 is a deficient number, since it is larger than the sum of its proper divisors (1).

258430693 is an equidigital number, since it uses as much as digits as its factorization.

258430693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 258430693 is about 16075.7797011529. The cubic root of 258430693 is about 636.9637211360.

The spelling of 258430693 in words is "two hundred fifty-eight million, four hundred thirty thousand, six hundred ninety-three".