2018720219 has 4 divisors (see below), whose sum is σ = 2030389296. Its totient is φ = 2007051144.

The previous prime is 2018720203. The next prime is 2018720257. The reversal of 2018720219 is 9120278102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2018720219 - 2⁴ = 2018720203 is a prime.

It is a super-2 number, since 2×2018720219² = 8150462645198815922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2018720299) 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, 5834279 + ... + 5834624.

It is an arithmetic number, because the mean of its divisors is an integer number (507597324).

Almost surely, 2^2018720219 is an apocalyptic number.

2018720219 is a deficient number, since it is larger than the sum of its proper divisors (11669077).

2018720219 is a wasteful number, since it uses less digits than its factorization.

2018720219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11669076.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 2018720219 is about 44930.1704759730. The cubic root of 2018720219 is about 1263.8398480780.

The spelling of 2018720219 in words is "two billion, eighteen million, seven hundred twenty thousand, two hundred nineteen".