1319795669 has 2 divisors, whose sum is σ = 1319795670. Its totient is φ = 1319795668.

The previous prime is 1319795639. The next prime is 1319795693. The reversal of 1319795669 is 9665979131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1305882769 + 13912900 = 36137^2 + 3730^2 .

It is an emirp because it is prime and its reverse (9665979131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1319795669 is a prime.

It is a super-2 number, since 2×1319795669² = 3483721215822315122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1319795639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659897834 + 659897835.

It is an arithmetic number, because the mean of its divisors is an integer number (659897835).

Almost surely, 2^1319795669 is an apocalyptic number.

It is an amenable number.

1319795669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1319795669 is an equidigital number, since it uses as much as digits as its factorization.

1319795669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2755620, while the sum is 56.

The square root of 1319795669 is about 36328.9921275006. The cubic root of 1319795669 is about 1096.9047057471.

The spelling of 1319795669 in words is "one billion, three hundred nineteen million, seven hundred ninety-five thousand, six hundred sixty-nine".