1922845368889 has 3 divisors (see below), whose sum is σ = 1922846755557. Its totient is φ = 1922843982222.

The previous prime is 1922845368883. The next prime is 1922845368893. The reversal of 1922845368889 is 9888635482291.

The square root of 1922845368889 is 1386667.

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 is not a de Polignac number, because 1922845368889 - 2¹³ = 1922845360697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1922845368883) 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 2 ways as a sum of consecutive naturals, for example, 693334 + ... + 2080000.

It is an arithmetic number, because the mean of its divisors is an integer number (640948918519).

Almost surely, 2^{1922845368889} is an apocalyptic number.

1922845368889 is the 1386667-th square number.

1922845368889 is the 693334-th centered octagonal number.

It is an amenable number.

1922845368889 is a deficient number, since it is larger than the sum of its proper divisors (1386668).

1922845368889 is an frugal number, since it uses more digits than its factorization.

1922845368889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773334 (or 1386667 counting only the distinct ones).

The product of its digits is 477757440, while the sum is 73.

The spelling of 1922845368889 in words is "one trillion, nine hundred twenty-two billion, eight hundred forty-five million, three hundred sixty-eight thousand, eight hundred eighty-nine".