1298967827 has 2 divisors, whose sum is σ = 1298967828. Its totient is φ = 1298967826.

The previous prime is 1298967809. The next prime is 1298967853. The reversal of 1298967827 is 7287698921.

It is a weak prime.

It is an emirp because it is prime and its reverse (7287698921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1298967827 - 2⁶ = 1298967763 is a prime.

It is a super-2 number, since 2×1298967827² = 3374634831162203858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1298960827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649483913 + 649483914.

It is an arithmetic number, because the mean of its divisors is an integer number (649483914).

Almost surely, 2^1298967827 is an apocalyptic number.

1298967827 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298967827 is an equidigital number, since it uses as much as digits as its factorization.

1298967827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 59.

The square root of 1298967827 is about 36041.1962481824. The cubic root of 1298967827 is about 1091.1039588204.

The spelling of 1298967827 in words is "one billion, two hundred ninety-eight million, nine hundred sixty-seven thousand, eight hundred twenty-seven".