192203720018 has 18 divisors (see below), whose sum is σ = 290368969317. Its totient is φ = 95418923400.

The previous prime is 192203719991. The next prime is 192203720041. The reversal of 192203720018 is 810027302291.

It can be written as a sum of positive squares in 2 ways, for example, as 192153352609 + 50367409 = 438353^2 + 7097^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=310003.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 192203720018.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 93619880 + ... + 93621932.

Almost surely, 2^192203720018 is an apocalyptic number.

192203720018 is a deficient number, since it is larger than the sum of its proper divisors (98165249299).

192203720018 is an frugal number, since it uses more digits than its factorization.

192203720018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4410 (or 2206 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 192203720018 in words is "one hundred ninety-two billion, two hundred three million, seven hundred twenty thousand, eighteen".