1198428639924 has 12 divisors (see below), whose sum is σ = 2796333493184. Its totient is φ = 399476213304.

The previous prime is 1198428639871. The next prime is 1198428639929. The reversal of 1198428639924 is 4299368248911.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198428639929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49934526652 + ... + 49934526675.

Almost surely, 2^{1198428639924} is an apocalyptic number.

It is an amenable number.

1198428639924 is an abundant number, since it is smaller than the sum of its proper divisors (1597904853260).

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

1198428639924 is a wasteful number, since it uses less digits than its factorization.

1198428639924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99869053334 (or 99869053332 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 66.

The spelling of 1198428639924 in words is "one trillion, one hundred ninety-eight billion, four hundred twenty-eight million, six hundred thirty-nine thousand, nine hundred twenty-four".