981584147 has 2 divisors, whose sum is σ = 981584148. Its totient is φ = 981584146.

The previous prime is 981584119. The next prime is 981584167. The reversal of 981584147 is 741485189.

It is a strong prime.

It is an emirp because it is prime and its reverse (741485189) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 981584147 - 2⁸ = 981583891 is a prime.

It is not a weakly prime, because it can be changed into another prime (981584167) 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, 490792073 + 490792074.

It is an arithmetic number, because the mean of its divisors is an integer number (490792074).

Almost surely, 2^981584147 is an apocalyptic number.

981584147 is a deficient number, since it is larger than the sum of its proper divisors (1).

981584147 is an equidigital number, since it uses as much as digits as its factorization.

981584147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 47.

The square root of 981584147 is about 31330.2433281326. The cubic root of 981584147 is about 993.8233093763.

The spelling of 981584147 in words is "nine hundred eighty-one million, five hundred eighty-four thousand, one hundred forty-seven".