2019109201 has 4 divisors (see below), whose sum is σ = 2023470592. Its totient is φ = 2014747812.

The previous prime is 2019109177. The next prime is 2019109217. The reversal of 2019109201 is 1029019102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1029019102 = 2 ⋅514509551.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2019109201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2019109501) 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, 2180001 + ... + 2180926.

It is an arithmetic number, because the mean of its divisors is an integer number (505867648).

Almost surely, 2^2019109201 is an apocalyptic number.

It is an amenable number.

2019109201 is a deficient number, since it is larger than the sum of its proper divisors (4361391).

2019109201 is an equidigital number, since it uses as much as digits as its factorization.

2019109201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4361390.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 2019109201 is about 44934.4990068878. The cubic root of 2019109201 is about 1263.9210182132.

Subtracting from 2019109201 its reverse (1029019102), we obtain a palindrome (990090099).

The spelling of 2019109201 in words is "two billion, nineteen million, one hundred nine thousand, two hundred one".