19922407252 has 48 divisors (see below), whose sum is σ = 39095348544. Its totient is φ = 8804384000.

The previous prime is 19922407229. The next prime is 19922407277. The reversal of 19922407252 is 25270422991.

It is a junction number, because it is equal to n+sod(n) for n = 19922407199 and 19922407208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 509727 + ... + 547417.

It is an arithmetic number, because the mean of its divisors is an integer number (814486428).

Almost surely, 2^19922407252 is an apocalyptic number.

It is an amenable number.

19922407252 is a deficient number, since it is larger than the sum of its proper divisors (19172941292).

19922407252 is a wasteful number, since it uses less digits than its factorization.

19922407252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38040 (or 38038 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 19922407252 in words is "nineteen billion, nine hundred twenty-two million, four hundred seven thousand, two hundred fifty-two".