900285181 has 2 divisors, whose sum is σ = 900285182. Its totient is φ = 900285180.

The previous prime is 900285163. The next prime is 900285203. The reversal of 900285181 is 181582009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 811737081 + 88548100 = 28491^2 + 9410^2 .

It is a cyclic number.

It is not a de Polignac number, because 900285181 - 2⁵ = 900285149 is a prime.

It is a super-2 number, since 2×900285181² = 1621026814256405522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (900285101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450142590 + 450142591.

It is an arithmetic number, because the mean of its divisors is an integer number (450142591).

Almost surely, 2^900285181 is an apocalyptic number.

It is an amenable number.

900285181 is a deficient number, since it is larger than the sum of its proper divisors (1).

900285181 is an equidigital number, since it uses as much as digits as its factorization.

900285181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 900285181 is about 30004.7526402069. The cubic root of 900285181 is about 965.5913513283.

The spelling of 900285181 in words is "nine hundred million, two hundred eighty-five thousand, one hundred eighty-one".