1679873879 has 4 divisors (see below), whose sum is σ = 1686902880. Its totient is φ = 1672844880.

The previous prime is 1679873869. The next prime is 1679873891. The reversal of 1679873879 is 9783789761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9783789761 = 78713 ⋅124297.

It is a cyclic number.

It is not a de Polignac number, because 1679873879 - 2⁴ = 1679873863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1679873869) 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, 3514142 + ... + 3514619.

It is an arithmetic number, because the mean of its divisors is an integer number (421725720).

Almost surely, 2^1679873879 is an apocalyptic number.

1679873879 is a deficient number, since it is larger than the sum of its proper divisors (7029001).

1679873879 is an equidigital number, since it uses as much as digits as its factorization.

1679873879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7029000.

The product of its digits is 32006016, while the sum is 65.

The square root of 1679873879 is about 40986.2645162986. The cubic root of 1679873879 is about 1188.7546416582.

The spelling of 1679873879 in words is "one billion, six hundred seventy-nine million, eight hundred seventy-three thousand, eight hundred seventy-nine".