1879666517 has 2 divisors, whose sum is σ = 1879666518. Its totient is φ = 1879666516.

The previous prime is 1879666511. The next prime is 1879666519. The reversal of 1879666517 is 7156669781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1842040561 + 37625956 = 42919^2 + 6134^2 .

It is a cyclic number.

It is not a de Polignac number, because 1879666517 - 2²² = 1875472213 is a prime.

It is a super-2 number, since 2×1879666517² = 7066292430261822578, which contains 22 as substring.

Together with 1879666519, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1879666511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 939833258 + 939833259.

It is an arithmetic number, because the mean of its divisors is an integer number (939833259).

Almost surely, 2^1879666517 is an apocalyptic number.

It is an amenable number.

1879666517 is a deficient number, since it is larger than the sum of its proper divisors (1).

1879666517 is an equidigital number, since it uses as much as digits as its factorization.

1879666517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 56.

The square root of 1879666517 is about 43355.1210008691. The cubic root of 1879666517 is about 1234.1281781575.

The spelling of 1879666517 in words is "one billion, eight hundred seventy-nine million, six hundred sixty-six thousand, five hundred seventeen".