198458421076 has 6 divisors (see below), whose sum is σ = 347302236890. Its totient is φ = 99229210536.

The previous prime is 198458421067. The next prime is 198458421097. The reversal of 198458421076 is 670124854891.

198458421076 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 184406689476 + 14051731600 = 429426^2 + 118540^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 24807302631 + ... + 24807302638.

Almost surely, 2^198458421076 is an apocalyptic number.

It is an amenable number.

198458421076 is a deficient number, since it is larger than the sum of its proper divisors (148843815814).

198458421076 is a wasteful number, since it uses less digits than its factorization.

198458421076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49614605273 (or 49614605271 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 198458421076 in words is "one hundred ninety-eight billion, four hundred fifty-eight million, four hundred twenty-one thousand, seventy-six".