198793001772 has 18 divisors (see below), whose sum is σ = 502504532348. Its totient is φ = 66264333912.

The previous prime is 198793001761. The next prime is 198793001789. The reversal of 198793001772 is 277100397891.

198793001772 is a `hidden beast` number, since 198 + 79 + 300 + 17 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2761013878 + ... + 2761013949.

Almost surely, 2^198793001772 is an apocalyptic number.

198793001772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198793001772 is an abundant number, since it is smaller than the sum of its proper divisors (303711530576).

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

198793001772 is a wasteful number, since it uses less digits than its factorization.

198793001772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5522027837 (or 5522027832 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 54.

The spelling of 198793001772 in words is "one hundred ninety-eight billion, seven hundred ninety-three million, one thousand, seven hundred seventy-two".