41518891 has 4 divisors (see below), whose sum is σ = 41558800. Its totient is φ = 41478984.

The previous prime is 41518877. The next prime is 41518901. The reversal of 41518891 is 19881514.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19881514 = 2 ⋅9940757.

It is a cyclic number.

It is not a de Polignac number, because 41518891 - 2⁵ = 41518859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 41518891.

It is not an unprimeable number, because it can be changed into a prime (41518861) 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, 18351 + ... + 20488.

It is an arithmetic number, because the mean of its divisors is an integer number (10389700).

Almost surely, 2^41518891 is an apocalyptic number.

41518891 is a deficient number, since it is larger than the sum of its proper divisors (39909).

41518891 is a wasteful number, since it uses less digits than its factorization.

41518891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39908.

The product of its digits is 11520, while the sum is 37.

The square root of 41518891 is about 6443.5154225004. The cubic root of 41518891 is about 346.2703039960.

It can be divided in two parts, 415 and 18891, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 41518891 in words is "forty-one million, five hundred eighteen thousand, eight hundred ninety-one".