1098138669838 has 32 divisors (see below), whose sum is σ = 1937941905600. Its totient is φ = 466465950720.

The previous prime is 1098138669809. The next prime is 1098138669869. The reversal of 1098138669838 is 8389668318901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7005603 + ... + 7160638.

It is an arithmetic number, because the mean of its divisors is an integer number (60560684550).

Almost surely, 2^{1098138669838} is an apocalyptic number.

1098138669838 is a deficient number, since it is larger than the sum of its proper divisors (839803235762).

1098138669838 is a wasteful number, since it uses less digits than its factorization.

1098138669838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14166377 (or 14166363 counting only the distinct ones).

The product of its (nonzero) digits is 107495424, while the sum is 70.

The spelling of 1098138669838 in words is "one trillion, ninety-eight billion, one hundred thirty-eight million, six hundred sixty-nine thousand, eight hundred thirty-eight".