18100573 has 2 divisors, whose sum is σ = 18100574. Its totient is φ = 18100572.

The previous prime is 18100547. The next prime is 18100583. The reversal of 18100573 is 37500181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10582009 + 7518564 = 3253^2 + 2742^2 .

It is a cyclic number.

It is not a de Polignac number, because 18100573 - 2⁵ = 18100541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18100583) 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, 9050286 + 9050287.

It is an arithmetic number, because the mean of its divisors is an integer number (9050287).

Almost surely, 2^18100573 is an apocalyptic number.

It is an amenable number.

18100573 is a deficient number, since it is larger than the sum of its proper divisors (1).

18100573 is an equidigital number, since it uses as much as digits as its factorization.

18100573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 18100573 is about 4254.4768185994. The cubic root of 18100573 is about 262.5613365360.

The spelling of 18100573 in words is "eighteen million, one hundred thousand, five hundred seventy-three".