181460729 has 2 divisors, whose sum is σ = 181460730. Its totient is φ = 181460728.

The previous prime is 181460717. The next prime is 181460753. The reversal of 181460729 is 927064181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97555129 + 83905600 = 9877^2 + 9160^2 .

It is a cyclic number.

It is not a de Polignac number, because 181460729 - 2¹² = 181456633 is a prime.

It is a super-2 number, since 2×181460729² = 65855992338422882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 181460692 and 181460701.

It is not a weakly prime, because it can be changed into another prime (181460759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90730364 + 90730365.

It is an arithmetic number, because the mean of its divisors is an integer number (90730365).

Almost surely, 2^181460729 is an apocalyptic number.

It is an amenable number.

181460729 is a deficient number, since it is larger than the sum of its proper divisors (1).

181460729 is an equidigital number, since it uses as much as digits as its factorization.

181460729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 181460729 is about 13470.7360229499. The cubic root of 181460729 is about 566.1448361377.

The spelling of 181460729 in words is "one hundred eighty-one million, four hundred sixty thousand, seven hundred twenty-nine".