1968546209 has 8 divisors (see below), whose sum is σ = 2250038400. Its totient is φ = 1687121856.

The previous prime is 1968546199. The next prime is 1968546211. The reversal of 1968546209 is 9026458691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1968546209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1968546289) 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, 91412 + ... + 110874.

It is an arithmetic number, because the mean of its divisors is an integer number (281254800).

Almost surely, 2^1968546209 is an apocalyptic number.

It is an amenable number.

1968546209 is a deficient number, since it is larger than the sum of its proper divisors (281492191).

1968546209 is a wasteful number, since it uses less digits than its factorization.

1968546209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33919.

The product of its (nonzero) digits is 933120, while the sum is 50.

The square root of 1968546209 is about 44368.3018494060. The cubic root of 1968546209 is about 1253.2812371696.

The spelling of 1968546209 in words is "one billion, nine hundred sixty-eight million, five hundred forty-six thousand, two hundred nine".