1298717926 has 16 divisors (see below), whose sum is σ = 2142742608. Its totient is φ = 590325120.

The previous prime is 1298717923. The next prime is 1298717929. The reversal of 1298717926 is 6297178921.

It is an interprime number because it is at equal distance from previous prime (1298717923) and next prime (1298717929).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298717923) 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 7 ways as a sum of consecutive naturals, for example, 241275 + ... + 246598.

It is an arithmetic number, because the mean of its divisors is an integer number (133921413).

Almost surely, 2^1298717926 is an apocalyptic number.

1298717926 is a deficient number, since it is larger than the sum of its proper divisors (844024682).

1298717926 is an equidigital number, since it uses as much as digits as its factorization.

1298717926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487908 (or 487886 counting only the distinct ones).

The product of its digits is 762048, while the sum is 52.

The square root of 1298717926 is about 36037.7292014910. The cubic root of 1298717926 is about 1091.0339839136.

The spelling of 1298717926 in words is "one billion, two hundred ninety-eight million, seven hundred seventeen thousand, nine hundred twenty-six".