1298730267 has 18 divisors (see below), whose sum is σ = 1948006268. Its totient is φ = 865815804.

The previous prime is 1298730239. The next prime is 1298730281. The reversal of 1298730267 is 7620378921.

It is not a de Polignac number, because 1298730267 - 2¹¹ = 1298728219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1298730767) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 92413 + ... + 105534.

Almost surely, 2^1298730267 is an apocalyptic number.

1298730267 is a deficient number, since it is larger than the sum of its proper divisors (649276001).

1298730267 is an frugal number, since it uses more digits than its factorization.

1298730267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197971 (or 197950 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 1298730267 is about 36037.9004244143. The cubic root of 1298730267 is about 1091.0374397340.

The spelling of 1298730267 in words is "one billion, two hundred ninety-eight million, seven hundred thirty thousand, two hundred sixty-seven".