918591712841 has 4 divisors (see below), whose sum is σ = 1002100050384. Its totient is φ = 835083375300.

The previous prime is 918591712817. The next prime is 918591712849. The reversal of 918591712841 is 148217195819.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-918591712841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (918591712849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41754168755 + ... + 41754168776.

It is an arithmetic number, because the mean of its divisors is an integer number (250525012596).

Almost surely, 2^918591712841 is an apocalyptic number.

It is an amenable number.

918591712841 is a deficient number, since it is larger than the sum of its proper divisors (83508337543).

918591712841 is a wasteful number, since it uses less digits than its factorization.

918591712841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83508337542.

The product of its digits is 1451520, while the sum is 56.

The spelling of 918591712841 in words is "nine hundred eighteen billion, five hundred ninety-one million, seven hundred twelve thousand, eight hundred forty-one".