1678830011 has 4 divisors (see below), whose sum is σ = 1678912800. Its totient is φ = 1678747224.

The previous prime is 1678829969. The next prime is 1678830059. The reversal of 1678830011 is 1100388761.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1678830011 - 2⁶ = 1678829947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1678830061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11870 + ... + 59148.

It is an arithmetic number, because the mean of its divisors is an integer number (419728200).

Almost surely, 2^1678830011 is an apocalyptic number.

1678830011 is a deficient number, since it is larger than the sum of its proper divisors (82789).

1678830011 is an equidigital number, since it uses as much as digits as its factorization.

1678830011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82788.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 1678830011 is about 40973.5281736879. The cubic root of 1678830011 is about 1188.5083612547.

The spelling of 1678830011 in words is "one billion, six hundred seventy-eight million, eight hundred thirty thousand, eleven".