19922400736 has 48 divisors (see below), whose sum is σ = 45147957120. Its totient is φ = 8476732800.

The previous prime is 19922400689. The next prime is 19922400769. The reversal of 19922400736 is 63700422991.

It is a junction number, because it is equal to n+sod(n) for n = 19922400692 and 19922400701.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 288790 + ... + 351061.

It is an arithmetic number, because the mean of its divisors is an integer number (940582440).

Almost surely, 2^19922400736 is an apocalyptic number.

19922400736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19922400736 is an abundant number, since it is smaller than the sum of its proper divisors (25225556384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19922400736 is a wasteful number, since it uses less digits than its factorization.

19922400736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640007 (or 639999 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 19922400736 in words is "nineteen billion, nine hundred twenty-two million, four hundred thousand, seven hundred thirty-six".