182490441721 has 9 divisors (see below), whose sum is σ = 212288278149. Its totient is φ = 156417815484.

The previous prime is 182490441719. The next prime is 182490441751. The reversal of 182490441721 is 127144094281.

The square root of 182490441721 is 427189.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 182490441721 - 2¹ = 182490441719 is a prime.

It is a super-2 number, since 2×182490441721² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (182490441751) 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 in 8 ways as a sum of consecutive naturals, for example, 2959810 + ... + 3020836.

It is an arithmetic number, because the mean of its divisors is an integer number (23587586461).

Almost surely, 2^182490441721 is an apocalyptic number.

182490441721 is the 427189-th square number.

182490441721 is the 213595-th centered octagonal number.

It is an amenable number.

182490441721 is a deficient number, since it is larger than the sum of its proper divisors (29797836428).

182490441721 is an frugal number, since it uses more digits than its factorization.

182490441721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122068 (or 61034 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 182490441721 in words is "one hundred eighty-two billion, four hundred ninety million, four hundred forty-one thousand, seven hundred twenty-one".