981473219 has 2 divisors, whose sum is σ = 981473220. Its totient is φ = 981473218.

The previous prime is 981473203. The next prime is 981473243. The reversal of 981473219 is 912374189.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 981473219 - 2⁴ = 981473203 is a prime.

It is a super-2 number, since 2×981473219² = 1926579359228443922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 981473219.

It is not a weakly prime, because it can be changed into another prime (981473249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490736609 + 490736610.

It is an arithmetic number, because the mean of its divisors is an integer number (490736610).

Almost surely, 2^981473219 is an apocalyptic number.

981473219 is a deficient number, since it is larger than the sum of its proper divisors (1).

981473219 is an equidigital number, since it uses as much as digits as its factorization.

981473219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The square root of 981473219 is about 31328.4729758729. The cubic root of 981473219 is about 993.7858709201.

The spelling of 981473219 in words is "nine hundred eighty-one million, four hundred seventy-three thousand, two hundred nineteen".