1916340 has 72 divisors (see below), whose sum is σ = 5789280. Its totient is φ = 472320.

The previous prime is 1916339. The next prime is 1916351. The reversal of 1916340 is 436191.

It is an Ulam number.

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 1916340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46720 + ... + 46760.

2^1916340 is an apocalyptic number.

1916340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1916340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2894640).

1916340 is an abundant number, since it is smaller than the sum of its proper divisors (3872940).

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

1916340 is a wasteful number, since it uses less digits than its factorization.

1916340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1916340 is about 1384.3193273230. The cubic root of 1916340 is about 124.2102745097.

The spelling of 1916340 in words is "one million, nine hundred sixteen thousand, three hundred forty".