1659193379 has 2 divisors, whose sum is σ = 1659193380. Its totient is φ = 1659193378.

The previous prime is 1659193309. The next prime is 1659193381. The reversal of 1659193379 is 9733919561.

It is a strong prime.

It is an emirp because it is prime and its reverse (9733919561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1659193379 - 2²⁴ = 1642416163 is a prime.

It is a Sophie Germain prime.

Together with 1659193381, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1659193379.

It is not a weakly prime, because it can be changed into another prime (1659193309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 829596689 + 829596690.

It is an arithmetic number, because the mean of its divisors is an integer number (829596690).

Almost surely, 2^1659193379 is an apocalyptic number.

1659193379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1659193379 is an equidigital number, since it uses as much as digits as its factorization.

1659193379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1377810, while the sum is 53.

The square root of 1659193379 is about 40733.1975052291. The cubic root of 1659193379 is about 1183.8563337199.

The spelling of 1659193379 in words is "one billion, six hundred fifty-nine million, one hundred ninety-three thousand, three hundred seventy-nine".