19806453112 has 16 divisors (see below), whose sum is σ = 37927251360. Its totient is φ = 9692519424.

The previous prime is 19806453103. The next prime is 19806453181. The reversal of 19806453112 is 21135460891.

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 3 ways as a sum of consecutive naturals, for example, 26337993 + ... + 26338744.

It is an arithmetic number, because the mean of its divisors is an integer number (2370453210).

Almost surely, 2^19806453112 is an apocalyptic number.

It is an amenable number.

19806453112 is a deficient number, since it is larger than the sum of its proper divisors (18120798248).

19806453112 is a wasteful number, since it uses less digits than its factorization.

19806453112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52676790 (or 52676786 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 19806453112 in words is "nineteen billion, eight hundred six million, four hundred fifty-three thousand, one hundred twelve".