731728348659 has 48 divisors (see below), whose sum is σ = 1340079287040. Its totient is φ = 373675913280.

The previous prime is 731728348597. The next prime is 731728348661. The reversal of 731728348659 is 956843827137.

731728348659 is a `hidden beast` number, since 7 + 3 + 1 + 72 + 83 + 486 + 5 + 9 = 666.

It is not a de Polignac number, because 731728348659 - 2¹⁶ = 731728283123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 731728348596 and 731728348605.

It is not an unprimeable number, because it can be changed into a prime (731728348159) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8907292 + ... + 8989065.

It is an arithmetic number, because the mean of its divisors is an integer number (27918318480).

Almost surely, 2^731728348659 is an apocalyptic number.

731728348659 is a deficient number, since it is larger than the sum of its proper divisors (608350938381).

731728348659 is a wasteful number, since it uses less digits than its factorization.

731728348659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17896440 (or 17896437 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 63.

The spelling of 731728348659 in words is "seven hundred thirty-one billion, seven hundred twenty-eight million, three hundred forty-eight thousand, six hundred fifty-nine".