9000181 has 4 divisors (see below), whose sum is σ = 9033664. Its totient is φ = 8966700.

The previous prime is 9000163. The next prime is 9000193. The reversal of 9000181 is 1810009.

9000181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1810009 = 271 ⋅6679.

It is a cyclic number.

It is not a de Polignac number, because 9000181 - 2¹³ = 8991989 is a prime.

It is a super-2 number, since 2×9000181² = 162006516065522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9000781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16335 + ... + 16876.

It is an arithmetic number, because the mean of its divisors is an integer number (2258416).

Almost surely, 2^9000181 is an apocalyptic number.

It is an amenable number.

9000181 is a deficient number, since it is larger than the sum of its proper divisors (33483).

9000181 is a wasteful number, since it uses less digits than its factorization.

9000181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33482.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 9000181 is about 3000.0301665150. The cubic root of 9000181 is about 208.0097767224.

The spelling of 9000181 in words is "nine million, one hundred eighty-one", and thus it is an aban number.