1298208695 has 20 divisors (see below), whose sum is σ = 1817400840. Its totient is φ = 890192016.

The previous prime is 1298208679. The next prime is 1298208697. The reversal of 1298208695 is 5968028921.

It is not a de Polignac number, because 1298208695 - 2⁴ = 1298208679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298208697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 42065 + ... + 66074.

It is an arithmetic number, because the mean of its divisors is an integer number (90870042).

Almost surely, 2^1298208695 is an apocalyptic number.

1298208695 is a deficient number, since it is larger than the sum of its proper divisors (519192145).

1298208695 is an frugal number, since it uses more digits than its factorization.

1298208695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108172 (or 108151 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 1298208695 is about 36030.6632606173. The cubic root of 1298208695 is about 1090.8913660935.

The spelling of 1298208695 in words is "one billion, two hundred ninety-eight million, two hundred eight thousand, six hundred ninety-five".