10208181 has 4 divisors (see below), whose sum is σ = 13610912. Its totient is φ = 6805452.

The previous prime is 10208179. The next prime is 10208213. The reversal of 10208181 is 18180201.

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 not a de Polignac number, because 10208181 - 2¹ = 10208179 is a prime.

It is a super-2 number, since 2×10208181² = 208413918657522, 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 (10208131) 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, 1701361 + ... + 1701366.

It is an arithmetic number, because the mean of its divisors is an integer number (3402728).

Almost surely, 2^10208181 is an apocalyptic number.

It is an amenable number.

10208181 is a deficient number, since it is larger than the sum of its proper divisors (3402731).

10208181 is an equidigital number, since it uses as much as digits as its factorization.

10208181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3402730.

The product of its (nonzero) digits is 128, while the sum is 21.

The square root of 10208181 is about 3195.0244130523. The cubic root of 10208181 is about 216.9282539400.

Adding to 10208181 its reverse (18180201), we get a palindrome (28388382).

The spelling of 10208181 in words is "ten million, two hundred eight thousand, one hundred eighty-one".