258226634819 has 2 divisors, whose sum is σ = 258226634820. Its totient is φ = 258226634818.

The previous prime is 258226634789. The next prime is 258226634881. The reversal of 258226634819 is 918436622852.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258226634819 is a prime.

It is a super-2 number, since 2×258226634819² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (258226634219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129113317409 + 129113317410.

It is an arithmetic number, because the mean of its divisors is an integer number (129113317410).

Almost surely, 2^258226634819 is an apocalyptic number.

258226634819 is a deficient number, since it is larger than the sum of its proper divisors (1).

258226634819 is an equidigital number, since it uses as much as digits as its factorization.

258226634819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9953280, while the sum is 56.

The spelling of 258226634819 in words is "two hundred fifty-eight billion, two hundred twenty-six million, six hundred thirty-four thousand, eight hundred nineteen".