1968913 has 8 divisors (see below), whose sum is σ = 2088000.
Its totient is φ = 1851408.
The previous prime is 1968899. The next prime is 1968919. The reversal of 1968913 is 3198691.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 1968913 - 29 = 1968401 is a prime.
It is a house number.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1968919) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2988 + ... + 3586.
It is an arithmetic number, because the mean of its divisors is an integer number (261000).
21968913 is an apocalyptic number.
It is an amenable number.
1968913 is a deficient number, since it is larger than the sum of its proper divisors (119087).
1968913 is a wasteful number, since it uses less digits than its factorization.
1968913 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 791.
The product of its digits is 11664, while the sum is 37.
The square root of 1968913 is about 1403.1796036146.
The cubic root of 1968913 is about 125.3359071890.
The spelling of 1968913 in words is "one million, nine hundred sixty-eight thousand, nine hundred thirteen".