730842326581 has 8 divisors (see below), whose sum is σ = 794747459160. Its totient is φ = 669261017088.

The previous prime is 730842326569. The next prime is 730842326623. The reversal of 730842326581 is 185623248037.

It can be written as a sum of positive squares in 4 ways, for example, as 440310546481 + 290531780100 = 663559^2 + 539010^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 730842326581 - 2⁷ = 730842326453 is a prime.

It is a super-2 number, since 2×730842326581² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730842326561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580955116 + ... + 580956373.

It is an arithmetic number, because the mean of its divisors is an integer number (99343432395).

Almost surely, 2^730842326581 is an apocalyptic number.

It is an amenable number.

730842326581 is a deficient number, since it is larger than the sum of its proper divisors (63905132579).

730842326581 is a wasteful number, since it uses less digits than its factorization.

730842326581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161911543.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 730842326581 in words is "seven hundred thirty billion, eight hundred forty-two million, three hundred twenty-six thousand, five hundred eighty-one".