1918854 has 48 divisors (see below), whose sum is σ = 4831008. Its totient is φ = 539136.

The previous prime is 1918849. The next prime is 1918859. The reversal of 1918854 is 4588191.

It is an interprime number because it is at equal distance from previous prime (1918849) and next prime (1918859).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1918859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12144 + ... + 12300.

It is an arithmetic number, because the mean of its divisors is an integer number (100646).

2^1918854 is an apocalyptic number.

1918854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1918854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2415504).

1918854 is an abundant number, since it is smaller than the sum of its proper divisors (2912154).

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

1918854 is a wasteful number, since it uses less digits than its factorization.

1918854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269 (or 266 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 1918854 is about 1385.2270572004. The cubic root of 1918854 is about 124.2645669246.

It can be divided in two parts, 1918 and 854, that added together give a palindrome (2772).

The spelling of 1918854 in words is "one million, nine hundred eighteen thousand, eight hundred fifty-four".