18923200201 has 2 divisors, whose sum is σ = 18923200202. Its totient is φ = 18923200200.

The previous prime is 18923200183. The next prime is 18923200243. The reversal of 18923200201 is 10200232981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14951175625 + 3972024576 = 122275^2 + 63024^2 .

It is an emirp because it is prime and its reverse (10200232981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18923200201 - 2⁹ = 18923199689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18923200201.

It is not a weakly prime, because it can be changed into another prime (18923200291) by changing a digit.

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, 9461600100 + 9461600101.

It is an arithmetic number, because the mean of its divisors is an integer number (9461600101).

Almost surely, 2^18923200201 is an apocalyptic number.

It is an amenable number.

18923200201 is a deficient number, since it is larger than the sum of its proper divisors (1).

18923200201 is an equidigital number, since it uses as much as digits as its factorization.

18923200201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 18923200201 in words is "eighteen billion, nine hundred twenty-three million, two hundred thousand, two hundred one".