259591019 has 2 divisors, whose sum is σ = 259591020. Its totient is φ = 259591018.

The previous prime is 259591009. The next prime is 259591039. The reversal of 259591019 is 910195952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 259591019 - 2²⁴ = 242813803 is a prime.

It is a super-2 number, since 2×259591019² = 134774994290916722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (259591009) 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, 129795509 + 129795510.

It is an arithmetic number, because the mean of its divisors is an integer number (129795510).

Almost surely, 2^259591019 is an apocalyptic number.

259591019 is a deficient number, since it is larger than the sum of its proper divisors (1).

259591019 is an equidigital number, since it uses as much as digits as its factorization.

259591019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36450, while the sum is 41.

The square root of 259591019 is about 16111.8285430301. The cubic root of 259591019 is about 637.9155974667.

The spelling of 259591019 in words is "two hundred fifty-nine million, five hundred ninety-one thousand, nineteen".