982506491 has 2 divisors, whose sum is σ = 982506492. Its totient is φ = 982506490.

The previous prime is 982506463. The next prime is 982506563. The reversal of 982506491 is 194605289.

It is a weak prime.

It is an emirp because it is prime and its reverse (194605289) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-982506491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (982506431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491253245 + 491253246.

It is an arithmetic number, because the mean of its divisors is an integer number (491253246).

Almost surely, 2^982506491 is an apocalyptic number.

982506491 is a deficient number, since it is larger than the sum of its proper divisors (1).

982506491 is an equidigital number, since it uses as much as digits as its factorization.

982506491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 982506491 is about 31344.9595788541. The cubic root of 982506491 is about 994.1344934320.

The spelling of 982506491 in words is "nine hundred eighty-two million, five hundred six thousand, four hundred ninety-one".