4842891231649 has 3 divisors (see below), whose sum is σ = 4842893432307. Its totient is φ = 4842889030992.

The previous prime is 4842891231641. The next prime is 4842891231709. The reversal of 4842891231649 is 9461321982484.

The square root of 4842891231649 is 2200657.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 3033780150625 + 1809111081024 = 1741775^2 + 1345032^2 .

It is not a de Polignac number, because 4842891231649 - 2³ = 4842891231641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4842891231641) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1100329 + ... + 3300985.

It is an arithmetic number, because the mean of its divisors is an integer number (1614297810769).

Almost surely, 2^{4842891231649} is an apocalyptic number.

4842891231649 is the 2200657-th square number.

4842891231649 is the 1100329-th centered octagonal number.

It is an amenable number.

4842891231649 is a deficient number, since it is larger than the sum of its proper divisors (2200658).

4842891231649 is an frugal number, since it uses more digits than its factorization.

4842891231649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4401314 (or 2200657 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 61.

The spelling of 4842891231649 in words is "four trillion, eight hundred forty-two billion, eight hundred ninety-one million, two hundred thirty-one thousand, six hundred forty-nine".