258930863 has 2 divisors, whose sum is σ = 258930864. Its totient is φ = 258930862.

The previous prime is 258930853. The next prime is 258930871. The reversal of 258930863 is 368039852.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258930863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258930853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129465431 + 129465432.

It is an arithmetic number, because the mean of its divisors is an integer number (129465432).

Almost surely, 2^258930863 is an apocalyptic number.

258930863 is a deficient number, since it is larger than the sum of its proper divisors (1).

258930863 is an equidigital number, since it uses as much as digits as its factorization.

258930863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 258930863 is about 16091.3288139917. The cubic root of 258930863 is about 637.3743855027.

The spelling of 258930863 in words is "two hundred fifty-eight million, nine hundred thirty thousand, eight hundred sixty-three".