1727968969 has 2 divisors, whose sum is σ = 1727968970. Its totient is φ = 1727968968.

The previous prime is 1727968937. The next prime is 1727968981. The reversal of 1727968969 is 9698697271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 868775625 + 859193344 = 29475^2 + 29312^2 .

It is a cyclic number.

It is not a de Polignac number, because 1727968969 - 2⁵ = 1727968937 is a prime.

It is a super-2 number, since 2×1727968969² = 5971753515653845922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1727968969.

It is not a weakly prime, because it can be changed into another prime (1727968999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 863984484 + 863984485.

It is an arithmetic number, because the mean of its divisors is an integer number (863984485).

Almost surely, 2^1727968969 is an apocalyptic number.

It is an amenable number.

1727968969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1727968969 is an equidigital number, since it uses as much as digits as its factorization.

1727968969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20575296, while the sum is 64.

The square root of 1727968969 is about 41568.8461350565. The cubic root of 1727968969 is about 1199.9928168552.

The spelling of 1727968969 in words is "one billion, seven hundred twenty-seven million, nine hundred sixty-eight thousand, nine hundred sixty-nine".