19201890143 has 8 divisors (see below), whose sum is σ = 20489401200. Its totient is φ = 17942067648.

The previous prime is 19201890109. The next prime is 19201890151. The reversal of 19201890143 is 34109810291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19201890143 - 2¹⁸ = 19201627999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19201890097 and 19201890106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19201890173) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6920708 + ... + 6923481.

It is an arithmetic number, because the mean of its divisors is an integer number (2561175150).

Almost surely, 2^19201890143 is an apocalyptic number.

19201890143 is a deficient number, since it is larger than the sum of its proper divisors (1287511057).

19201890143 is a wasteful number, since it uses less digits than its factorization.

19201890143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13844281.

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 19201890143 in words is "nineteen billion, two hundred one million, eight hundred ninety thousand, one hundred forty-three".