184336981 has 2 divisors, whose sum is σ = 184336982. Its totient is φ = 184336980.

The previous prime is 184336979. The next prime is 184336987. The reversal of 184336981 is 189633481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94750756 + 89586225 = 9734^2 + 9465^2 .

It is an emirp because it is prime and its reverse (189633481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 184336981 - 2¹ = 184336979 is a prime.

It is a super-2 number, since 2×184336981² = 67960245128388722, which contains 22 as substring.

Together with 184336979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (184336987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92168490 + 92168491.

It is an arithmetic number, because the mean of its divisors is an integer number (92168491).

Almost surely, 2^184336981 is an apocalyptic number.

It is an amenable number.

184336981 is a deficient number, since it is larger than the sum of its proper divisors (1).

184336981 is an equidigital number, since it uses as much as digits as its factorization.

184336981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 43.

The square root of 184336981 is about 13577.0755687666. The cubic root of 184336981 is about 569.1204049194.

The spelling of 184336981 in words is "one hundred eighty-four million, three hundred thirty-six thousand, nine hundred eighty-one".