1298109904 has 40 divisors (see below), whose sum is σ = 3095496320. Its totient is φ = 513537408.

The previous prime is 1298109899. The next prime is 1298109907. The reversal of 1298109904 is 4099018921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298109907) 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, 444324 + ... + 447235.

It is an arithmetic number, because the mean of its divisors is an integer number (77387408).

Almost surely, 2^1298109904 is an apocalyptic number.

1298109904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1298109904 is an abundant number, since it is smaller than the sum of its proper divisors (1797386416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1298109904 is a wasteful number, since it uses less digits than its factorization.

1298109904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891587 (or 891581 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 1298109904 is about 36029.2923050120. The cubic root of 1298109904 is about 1090.8636938651.

The spelling of 1298109904 in words is "one billion, two hundred ninety-eight million, one hundred nine thousand, nine hundred four".