804986732981 has 2 divisors, whose sum is σ = 804986732982. Its totient is φ = 804986732980.

The previous prime is 804986732951. The next prime is 804986732989. The reversal of 804986732981 is 189237689408.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 502162145956 + 302824587025 = 708634^2 + 550295^2 .

It is a cyclic number.

It is not a de Polignac number, because 804986732981 - 2⁶ = 804986732917 is a prime.

It is a super-2 number, since 2×804986732981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804986732989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402493366490 + 402493366491.

It is an arithmetic number, because the mean of its divisors is an integer number (402493366491).

Almost surely, 2^804986732981 is an apocalyptic number.

It is an amenable number.

804986732981 is a deficient number, since it is larger than the sum of its proper divisors (1).

804986732981 is an equidigital number, since it uses as much as digits as its factorization.

804986732981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41803776, while the sum is 65.

The spelling of 804986732981 in words is "eight hundred four billion, nine hundred eighty-six million, seven hundred thirty-two thousand, nine hundred eighty-one".