1679449867 has 2 divisors, whose sum is σ = 1679449868. Its totient is φ = 1679449866.

The previous prime is 1679449853. The next prime is 1679449879. The reversal of 1679449867 is 7689449761.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1679449867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1679449267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 839724933 + 839724934.

It is an arithmetic number, because the mean of its divisors is an integer number (839724934).

Almost surely, 2^1679449867 is an apocalyptic number.

1679449867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1679449867 is an equidigital number, since it uses as much as digits as its factorization.

1679449867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18289152, while the sum is 61.

The square root of 1679449867 is about 40981.0915789221. The cubic root of 1679449867 is about 1188.6546165603.

The spelling of 1679449867 in words is "one billion, six hundred seventy-nine million, four hundred forty-nine thousand, eight hundred sixty-seven".