19481044111 has 4 divisors (see below), whose sum is σ = 19481385400. Its totient is φ = 19480702824.

The previous prime is 19481044103. The next prime is 19481044127. The reversal of 19481044111 is 11144018491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19481044111 - 2³ = 19481044103 is a prime.

It is a super-2 number, since 2×19481044111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19481044411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61941 + ... + 206878.

It is an arithmetic number, because the mean of its divisors is an integer number (4870346350).

Almost surely, 2^19481044111 is an apocalyptic number.

19481044111 is a deficient number, since it is larger than the sum of its proper divisors (341289).

19481044111 is an equidigital number, since it uses as much as digits as its factorization.

19481044111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341288.

The product of its (nonzero) digits is 4608, while the sum is 34.

The spelling of 19481044111 in words is "nineteen billion, four hundred eighty-one million, forty-four thousand, one hundred eleven".