1922845368890 has 16 divisors (see below), whose sum is σ = 3467764901160. Its totient is φ = 767661872640.

The previous prime is 1922845368883. The next prime is 1922845368893. The reversal of 1922845368890 is 988635482291.

It is a Cunningham number, because it is equal to 1386667²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1681449043849 + 241396325041 = 1296707^2 + 491321^2 .

It is not an unprimeable number, because it can be changed into a prime (1922845368893) 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 7 ways as a sum of consecutive naturals, for example, 184528895 + ... + 184539314.

Almost surely, 2^{1922845368890} is an apocalyptic number.

1922845368890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1922845368890 is a deficient number, since it is larger than the sum of its proper divisors (1544919532270).

1922845368890 is a wasteful number, since it uses less digits than its factorization.

1922845368890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369068737.

The product of its (nonzero) digits is 59719680, while the sum is 65.

The spelling of 1922845368890 in words is "one trillion, nine hundred twenty-two billion, eight hundred forty-five million, three hundred sixty-eight thousand, eight hundred ninety".