1814385918 has 16 divisors (see below), whose sum is σ = 3745829376. Its totient is φ = 585285720.

The previous prime is 1814385913. The next prime is 1814385919. The reversal of 1814385918 is 8195834181.

It is a happy number.

It is a super-3 number, since 3×1814385918³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1814385913) 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 7 ways as a sum of consecutive naturals, for example, 4877196 + ... + 4877567.

It is an arithmetic number, because the mean of its divisors is an integer number (234114336).

Almost surely, 2^1814385918 is an apocalyptic number.

1814385918 is an abundant number, since it is smaller than the sum of its proper divisors (1931443458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1814385918 is a wasteful number, since it uses less digits than its factorization.

1814385918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9754799.

The product of its digits is 276480, while the sum is 48.

The square root of 1814385918 is about 42595.6091399102. The cubic root of 1814385918 is about 1219.6724727699.

The spelling of 1814385918 in words is "one billion, eight hundred fourteen million, three hundred eighty-five thousand, nine hundred eighteen".