19112141 has 4 divisors (see below), whose sum is σ = 19146300. Its totient is φ = 19077984.

The previous prime is 19112117. The next prime is 19112143. The reversal of 19112141 is 14121191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14121191 = 7 ⋅2017313.

It can be written as a sum of positive squares in 2 ways, for example, as 12460900 + 6651241 = 3530^2 + 2579^2 .

It is a cyclic number.

It is not a de Polignac number, because 19112141 - 2⁶ = 19112077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19112143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16226 + ... + 17363.

It is an arithmetic number, because the mean of its divisors is an integer number (4786575).

Almost surely, 2^19112141 is an apocalyptic number.

It is an amenable number.

19112141 is a deficient number, since it is larger than the sum of its proper divisors (34159).

19112141 is an equidigital number, since it uses as much as digits as its factorization.

19112141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34158.

The product of its digits is 72, while the sum is 20.

The square root of 19112141 is about 4371.7434737185. The cubic root of 19112141 is about 267.3641130073.

The spelling of 19112141 in words is "nineteen million, one hundred twelve thousand, one hundred forty-one".