9408181 has 4 divisors (see below), whose sum is σ = 9424000. Its totient is φ = 9392364.

The previous prime is 9408169. The next prime is 9408187. The reversal of 9408181 is 1818049.

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.

It is a cyclic number.

It is not a de Polignac number, because 9408181 - 2⁵ = 9408149 is a prime.

It is a super-2 number, since 2×9408181² = 177027739457522, 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 (9408187) 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, 6981 + ... + 8218.

It is an arithmetic number, because the mean of its divisors is an integer number (2356000).

Almost surely, 2^9408181 is an apocalyptic number.

It is an amenable number.

9408181 is a deficient number, since it is larger than the sum of its proper divisors (15819).

9408181 is a wasteful number, since it uses less digits than its factorization.

9408181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15818.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 9408181 is about 3067.2758271796. The cubic root of 9408181 is about 211.1066373218.

The spelling of 9408181 in words is "nine million, four hundred eight thousand, one hundred eighty-one".