2018439819 has 48 divisors (see below), whose sum is σ = 3326079744. Its totient is φ = 1167566400.

The previous prime is 2018439803. The next prime is 2018439827. The reversal of 2018439819 is 9189348102.

2018439819 is a `hidden beast` number, since 201 + 8 + 439 + 8 + 1 + 9 = 666.

It is not a de Polignac number, because 2018439819 - 2⁴ = 2018439803 is a prime.

It is a super-2 number, since 2×2018439819² = 8148198605849505522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2018439859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1723104 + ... + 1724274.

It is an arithmetic number, because the mean of its divisors is an integer number (69293328).

Almost surely, 2^2018439819 is an apocalyptic number.

2018439819 is a deficient number, since it is larger than the sum of its proper divisors (1307639925).

2018439819 is a wasteful number, since it uses less digits than its factorization.

2018439819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968 (or 1965 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 2018439819 is about 44927.0499699235. The cubic root of 2018439819 is about 1263.7813296333.

The spelling of 2018439819 in words is "two billion, eighteen million, four hundred thirty-nine thousand, eight hundred nineteen".