10909181 has 2 divisors, whose sum is σ = 10909182. Its totient is φ = 10909180.

The previous prime is 10909169. The next prime is 10909231. The reversal of 10909181 is 18190901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5480281 + 5428900 = 2341^2 + 2330^2 .

It is a cyclic number.

It is not a de Polignac number, because 10909181 - 2¹⁴ = 10892797 is a prime.

It is a super-2 number, since 2×10909181² = 238020460181522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10909081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5454590 + 5454591.

It is an arithmetic number, because the mean of its divisors is an integer number (5454591).

Almost surely, 2^10909181 is an apocalyptic number.

It is an amenable number.

10909181 is a deficient number, since it is larger than the sum of its proper divisors (1).

10909181 is an equidigital number, since it uses as much as digits as its factorization.

10909181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 10909181 is about 3302.9049335396. The cubic root of 10909181 is about 221.7842573055.

The spelling of 10909181 in words is "ten million, nine hundred nine thousand, one hundred eighty-one".