18030461 has 2 divisors, whose sum is σ = 18030462. Its totient is φ = 18030460.

The previous prime is 18030451. The next prime is 18030473. The reversal of 18030461 is 16403081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10686361 + 7344100 = 3269^2 + 2710^2 .

It is a cyclic number.

It is not a de Polignac number, because 18030461 - 2¹⁰ = 18029437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18030401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9015230 + 9015231.

It is an arithmetic number, because the mean of its divisors is an integer number (9015231).

Almost surely, 2^18030461 is an apocalyptic number.

It is an amenable number.

18030461 is a deficient number, since it is larger than the sum of its proper divisors (1).

18030461 is an equidigital number, since it uses as much as digits as its factorization.

18030461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 18030461 is about 4246.2290329185. The cubic root of 18030461 is about 262.2218901879.

The spelling of 18030461 in words is "eighteen million, thirty thousand, four hundred sixty-one".