2018189879 has 16 divisors (see below), whose sum is σ = 2071327872. Its totient is φ = 1965873888.

The previous prime is 2018189791. The next prime is 2018189897. The reversal of 2018189879 is 9789818102.

It is a happy number.

It is not a de Polignac number, because 2018189879 - 2²⁰ = 2017141303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2018189879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2018189179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3090317 + ... + 3090969.

It is an arithmetic number, because the mean of its divisors is an integer number (129457992).

Almost surely, 2^2018189879 is an apocalyptic number.

2018189879 is a deficient number, since it is larger than the sum of its proper divisors (53137993).

2018189879 is a wasteful number, since it uses less digits than its factorization.

2018189879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166.

The product of its (nonzero) digits is 580608, while the sum is 53.

The square root of 2018189879 is about 44924.2682633785. The cubic root of 2018189879 is about 1263.7291635095.

The spelling of 2018189879 in words is "two billion, eighteen million, one hundred eighty-nine thousand, eight hundred seventy-nine".