1298644338 has 16 divisors (see below), whose sum is σ = 2733988320. Its totient is φ = 410098176.

The previous prime is 1298644337. The next prime is 1298644379. The reversal of 1298644338 is 8334468921.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1298644337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5695695 + ... + 5695922.

It is an arithmetic number, because the mean of its divisors is an integer number (170874270).

Almost surely, 2^1298644338 is an apocalyptic number.

1298644338 is an abundant number, since it is smaller than the sum of its proper divisors (1435343982).

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

1298644338 is a wasteful number, since it uses less digits than its factorization.

1298644338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11391641.

The product of its digits is 995328, while the sum is 48.

The square root of 1298644338 is about 36036.7082014992. The cubic root of 1298644338 is about 1091.0133767893.

The spelling of 1298644338 in words is "one billion, two hundred ninety-eight million, six hundred forty-four thousand, three hundred thirty-eight".