981705119 has 2 divisors, whose sum is σ = 981705120. Its totient is φ = 981705118.

The previous prime is 981705089. The next prime is 981705133. The reversal of 981705119 is 911507189.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-981705119 is a prime.

It is a super-2 number, since 2×981705119² = 1927489881341608322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981705139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490852559 + 490852560.

It is an arithmetic number, because the mean of its divisors is an integer number (490852560).

Almost surely, 2^981705119 is an apocalyptic number.

981705119 is a deficient number, since it is larger than the sum of its proper divisors (1).

981705119 is an equidigital number, since it uses as much as digits as its factorization.

981705119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 41.

The square root of 981705119 is about 31332.1738632990. The cubic root of 981705119 is about 993.8641344905.

The spelling of 981705119 in words is "nine hundred eighty-one million, seven hundred five thousand, one hundred nineteen".