1219982417 has 2 divisors, whose sum is σ = 1219982418. Its totient is φ = 1219982416.

The previous prime is 1219982329. The next prime is 1219982453. The reversal of 1219982417 is 7142899121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 772617616 + 447364801 = 27796^2 + 21151^2 .

It is a cyclic number.

It is not a de Polignac number, because 1219982417 - 2¹⁶ = 1219916881 is a prime.

It is not a weakly prime, because it can be changed into another prime (1219982017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609991208 + 609991209.

It is an arithmetic number, because the mean of its divisors is an integer number (609991209).

Almost surely, 2^1219982417 is an apocalyptic number.

It is an amenable number.

1219982417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1219982417 is an equidigital number, since it uses as much as digits as its factorization.

1219982417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 44.

The square root of 1219982417 is about 34928.2466923263. The cubic root of 1219982417 is about 1068.5245968023.

The spelling of 1219982417 in words is "one billion, two hundred nineteen million, nine hundred eighty-two thousand, four hundred seventeen".