104493181 has 4 divisors (see below), whose sum is σ = 112531132. Its totient is φ = 96455232.

The previous prime is 104493161. The next prime is 104493199. The reversal of 104493181 is 181394401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 181394401 = 6791 ⋅26711.

It can be written as a sum of positive squares in 2 ways, for example, as 58660281 + 45832900 = 7659^2 + 6770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104493181 is a prime.

It is a super-2 number, since 2×104493181² = 21837649750997522, 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 (104493121) 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, 4018956 + ... + 4018981.

It is an arithmetic number, because the mean of its divisors is an integer number (28132783).

Almost surely, 2^104493181 is an apocalyptic number.

It is an amenable number.

104493181 is a deficient number, since it is larger than the sum of its proper divisors (8037951).

104493181 is an equidigital number, since it uses as much as digits as its factorization.

104493181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8037950.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 104493181 is about 10222.1906164970. The cubic root of 104493181 is about 471.0091204699.

The spelling of 104493181 in words is "one hundred four million, four hundred ninety-three thousand, one hundred eighty-one".