18150161 has 2 divisors, whose sum is σ = 18150162. Its totient is φ = 18150160.

The previous prime is 18150109. The next prime is 18150163. The reversal of 18150161 is 16105181.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17305600 + 844561 = 4160^2 + 919^2 .

It is a cyclic number.

It is not a de Polignac number, because 18150161 - 2¹⁴ = 18133777 is a prime.

It is a Sophie Germain prime.

Together with 18150163, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (18150163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9075080 + 9075081.

It is an arithmetic number, because the mean of its divisors is an integer number (9075081).

Almost surely, 2^18150161 is an apocalyptic number.

It is an amenable number.

18150161 is a deficient number, since it is larger than the sum of its proper divisors (1).

18150161 is an equidigital number, since it uses as much as digits as its factorization.

18150161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 23.

The square root of 18150161 is about 4260.3005762505. The cubic root of 18150161 is about 262.8008873306.

The spelling of 18150161 in words is "eighteen million, one hundred fifty thousand, one hundred sixty-one".