19918041112 has 8 divisors (see below), whose sum is σ = 37346327100. Its totient is φ = 9959020552.

The previous prime is 19918041097. The next prime is 19918041113. The reversal of 19918041112 is 21114081991.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×19918041112³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19918041113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1244877562 + ... + 1244877577.

Almost surely, 2^19918041112 is an apocalyptic number.

It is an amenable number.

19918041112 is a deficient number, since it is larger than the sum of its proper divisors (17428285988).

19918041112 is a wasteful number, since it uses less digits than its factorization.

19918041112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2489755145 (or 2489755141 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 37.

The spelling of 19918041112 in words is "nineteen billion, nine hundred eighteen million, forty-one thousand, one hundred twelve".