2921805630241 has 9 divisors (see below), whose sum is σ = 2930110817809. Its totient is φ = 2913523931236.

The previous prime is 2921805630239. The next prime is 2921805630251. The reversal of 2921805630241 is 1420365081292.

The square root of 2921805630241 is 1709329.

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

2921805630241 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2921805630241 - 2¹ = 2921805630239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2921805630221) 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 8 ways as a sum of consecutive naturals, for example, 654670776 + ... + 654675238.

Almost surely, 2^{2921805630241} is an apocalyptic number.

2921805630241 is the 1709329-th square number.

2921805630241 is the 854665-th centered octagonal number.

It is an amenable number.

2921805630241 is a deficient number, since it is larger than the sum of its proper divisors (8305187568).

2921805630241 is an frugal number, since it uses more digits than its factorization.

2921805630241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9692 (or 4846 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 2921805630241 in words is "two trillion, nine hundred twenty-one billion, eight hundred five million, six hundred thirty thousand, two hundred forty-one".