981433577 has 2 divisors, whose sum is σ = 981433578. Its totient is φ = 981433576.

The previous prime is 981433571. The next prime is 981433597. The reversal of 981433577 is 775334189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 608904976 + 372528601 = 24676^2 + 19301^2 .

It is a cyclic number.

It is not a de Polignac number, because 981433577 - 2⁴ = 981433561 is a prime.

It is not a weakly prime, because it can be changed into another prime (981433571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490716788 + 490716789.

It is an arithmetic number, because the mean of its divisors is an integer number (490716789).

Almost surely, 2^981433577 is an apocalyptic number.

It is an amenable number.

981433577 is a deficient number, since it is larger than the sum of its proper divisors (1).

981433577 is an equidigital number, since it uses as much as digits as its factorization.

981433577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 47.

The square root of 981433577 is about 31327.8402862374. The cubic root of 981433577 is about 993.7724909694.

The spelling of 981433577 in words is "nine hundred eighty-one million, four hundred thirty-three thousand, five hundred seventy-seven".