18925201 has 2 divisors, whose sum is σ = 18925202. Its totient is φ = 18925200.

The previous prime is 18925111. The next prime is 18925211. The reversal of 18925201 is 10252981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15681600 + 3243601 = 3960^2 + 1801^2 .

It is a cyclic number.

It is not a de Polignac number, because 18925201 - 2¹¹ = 18923153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18925201.

It is not a weakly prime, because it can be changed into another prime (18925211) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9462600 + 9462601.

It is an arithmetic number, because the mean of its divisors is an integer number (9462601).

Almost surely, 2^18925201 is an apocalyptic number.

It is an amenable number.

18925201 is a deficient number, since it is larger than the sum of its proper divisors (1).

18925201 is an equidigital number, since it uses as much as digits as its factorization.

18925201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 18925201 is about 4350.3104486921. The cubic root of 18925201 is about 266.4895398392.

The spelling of 18925201 in words is "eighteen million, nine hundred twenty-five thousand, two hundred one".