1678345211 has 8 divisors (see below), whose sum is σ = 1707566400. Its totient is φ = 1649149960.

The previous prime is 1678345199. The next prime is 1678345289. The reversal of 1678345211 is 1125438761.

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 1678345211 - 2⁶ = 1678345147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1678347211) 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, 161276 + ... + 171366.

It is an arithmetic number, because the mean of its divisors is an integer number (213445800).

Almost surely, 2^1678345211 is an apocalyptic number.

1678345211 is a deficient number, since it is larger than the sum of its proper divisors (29221189).

1678345211 is a wasteful number, since it uses less digits than its factorization.

1678345211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12969.

The product of its digits is 40320, while the sum is 38.

The square root of 1678345211 is about 40967.6117317083. The cubic root of 1678345211 is about 1188.3939473829.

The spelling of 1678345211 in words is "one billion, six hundred seventy-eight million, three hundred forty-five thousand, two hundred eleven".