18382061 has 2 divisors, whose sum is σ = 18382062. Its totient is φ = 18382060.

The previous prime is 18382033. The next prime is 18382073. The reversal of 18382061 is 16028381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15760900 + 2621161 = 3970^2 + 1619^2 .

It is a cyclic number.

It is not a de Polignac number, because 18382061 - 2¹⁸ = 18119917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18382261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9191030 + 9191031.

It is an arithmetic number, because the mean of its divisors is an integer number (9191031).

Almost surely, 2^18382061 is an apocalyptic number.

It is an amenable number.

18382061 is a deficient number, since it is larger than the sum of its proper divisors (1).

18382061 is an equidigital number, since it uses as much as digits as its factorization.

18382061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 18382061 is about 4287.4305825284. The cubic root of 18382061 is about 263.9154008468.

The spelling of 18382061 in words is "eighteen million, three hundred eighty-two thousand, sixty-one".