981481219 has 2 divisors, whose sum is σ = 981481220. Its totient is φ = 981481218.

The previous prime is 981481181. The next prime is 981481253. The reversal of 981481219 is 912184189.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 981481219 - 2⁷ = 981481091 is a prime.

It is a super-2 number, since 2×981481219² = 1926610766499451922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (981481819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490740609 + 490740610.

It is an arithmetic number, because the mean of its divisors is an integer number (490740610).

Almost surely, 2^981481219 is an apocalyptic number.

981481219 is a deficient number, since it is larger than the sum of its proper divisors (1).

981481219 is an equidigital number, since it uses as much as digits as its factorization.

981481219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 43.

The square root of 981481219 is about 31328.6006549926. The cubic root of 981481219 is about 993.7885710330.

The spelling of 981481219 in words is "nine hundred eighty-one million, four hundred eighty-one thousand, two hundred nineteen".