20182019109 has 24 divisors (see below), whose sum is σ = 31308097248. Its totient is φ = 11530602720.

The previous prime is 20182019101. The next prime is 20182019119. The reversal of 20182019109 is 90191028102.

It is not a de Polignac number, because 20182019109 - 2³ = 20182019101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20182019109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20182019101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1541539 + ... + 1554575.

It is an arithmetic number, because the mean of its divisors is an integer number (1304504052).

Almost surely, 2^20182019109 is an apocalyptic number.

It is an amenable number.

20182019109 is a deficient number, since it is larger than the sum of its proper divisors (11126078139).

20182019109 is a wasteful number, since it uses less digits than its factorization.

20182019109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23585 (or 23578 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 33.

The spelling of 20182019109 in words is "twenty billion, one hundred eighty-two million, nineteen thousand, one hundred nine".