1918350 has 144 divisors (see below), whose sum is σ = 6361200. Its totient is φ = 423360.

The previous prime is 1918327. The next prime is 1918351. The reversal of 1918350 is 538191.

1918350 is nontrivially palindromic in base 13.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1918351) 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 71 ways as a sum of consecutive naturals, for example, 66136 + ... + 66164.

It is an arithmetic number, because the mean of its divisors is an integer number (44175).

2^1918350 is an apocalyptic number.

1918350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1918350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3180600).

1918350 is an abundant number, since it is smaller than the sum of its proper divisors (4442850).

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

1918350 is a wasteful number, since it uses less digits than its factorization.

1918350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1918350 is about 1385.0451256187. The cubic root of 1918350 is about 124.2536863285.

The spelling of 1918350 in words is "one million, nine hundred eighteen thousand, three hundred fifty".