18119201 has 2 divisors, whose sum is σ = 18119202. Its totient is φ = 18119200.

The previous prime is 18119191. The next prime is 18119207. The reversal of 18119201 is 10291181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10144225 + 7974976 = 3185^2 + 2824^2 .

It is an emirp because it is prime and its reverse (10291181) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18119201 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (18119207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9059600 + 9059601.

It is an arithmetic number, because the mean of its divisors is an integer number (9059601).

Almost surely, 2^18119201 is an apocalyptic number.

It is an amenable number.

18119201 is a deficient number, since it is larger than the sum of its proper divisors (1).

18119201 is an equidigital number, since it uses as much as digits as its factorization.

18119201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 18119201 is about 4256.6654789870. The cubic root of 18119201 is about 262.6513763320.

The spelling of 18119201 in words is "eighteen million, one hundred nineteen thousand, two hundred one".