105418181 has 8 divisors (see below), whose sum is σ = 115319424. Its totient is φ = 95569920.

The previous prime is 105418171. The next prime is 105418193. The reversal of 105418181 is 181814501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105418181 is a prime.

It is a super-2 number, since 2×105418181² = 22225985770697522, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105418171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9020 + ... + 17093.

It is an arithmetic number, because the mean of its divisors is an integer number (14414928).

Almost surely, 2^105418181 is an apocalyptic number.

105418181 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

105418181 is a deficient number, since it is larger than the sum of its proper divisors (9901243).

105418181 is a wasteful number, since it uses less digits than its factorization.

105418181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26491.

The product of its (nonzero) digits is 1280, while the sum is 29.

The square root of 105418181 is about 10267.3356329673. The cubic root of 105418181 is about 472.3948699973.

The spelling of 105418181 in words is "one hundred five million, four hundred eighteen thousand, one hundred eighty-one".