1916838 has 64 divisors (see below), whose sum is σ = 5322240. Its totient is φ = 496800.

The previous prime is 1916833. The next prime is 1916839. The reversal of 1916838 is 8386191.

It is a d-powerful number, because it can be written as 1 + 9⁵ + 1 + 6⁸ + 8³ + 3¹¹ + 8³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3928 + ... + 4388.

It is an arithmetic number, because the mean of its divisors is an integer number (83160).

2^1916838 is an apocalyptic number.

1916838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1916838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2661120).

1916838 is an abundant number, since it is smaller than the sum of its proper divisors (3405402).

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

1916838 is a wasteful number, since it uses less digits than its factorization.

1916838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 484 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 1916838 is about 1384.4991874320. The cubic root of 1916838 is about 124.2210331015.

The spelling of 1916838 in words is "one million, nine hundred sixteen thousand, eight hundred thirty-eight".