1966259 has 2 divisors, whose sum is σ = 1966260. Its totient is φ = 1966258.

The previous prime is 1966241. The next prime is 1966297. The reversal of 1966259 is 9526691.

It is an a-pointer prime, because the next prime (1966297) can be obtained adding 1966259 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1966259 is a prime.

It is not a weakly prime, because it can be changed into another prime (1966219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983129 + 983130.

It is an arithmetic number, because the mean of its divisors is an integer number (983130).

2^1966259 is an apocalyptic number.

1966259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1966259 is an equidigital number, since it uses as much as digits as its factorization.

1966259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 38.

The square root of 1966259 is about 1402.2335754075. The cubic root of 1966259 is about 125.2795662754.

The spelling of 1966259 in words is "one million, nine hundred sixty-six thousand, two hundred fifty-nine".