1679291791 has 2 divisors, whose sum is σ = 1679291792. Its totient is φ = 1679291790.

The previous prime is 1679291749. The next prime is 1679291833. The reversal of 1679291791 is 1971929761.

It is a balanced prime because it is at equal distance from previous prime (1679291749) and next prime (1679291833).

It is an emirp because it is prime and its reverse (1971929761) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1679291791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1679291701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 839645895 + 839645896.

It is an arithmetic number, because the mean of its divisors is an integer number (839645896).

Almost surely, 2^1679291791 is an apocalyptic number.

1679291791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1679291791 is an equidigital number, since it uses as much as digits as its factorization.

1679291791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 428652, while the sum is 52.

The square root of 1679291791 is about 40979.1628879849. The cubic root of 1679291791 is about 1188.6173218750.

The spelling of 1679291791 in words is "one billion, six hundred seventy-nine million, two hundred ninety-one thousand, seven hundred ninety-one".