918548491 has 4 divisors (see below), whose sum is σ = 1049769712. Its totient is φ = 787327272.

The previous prime is 918548489. The next prime is 918548497. The reversal of 918548491 is 194845819.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 918548491 - 2¹ = 918548489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (918548497) 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, 65610600 + ... + 65610613.

It is an arithmetic number, because the mean of its divisors is an integer number (262442428).

Almost surely, 2^918548491 is an apocalyptic number.

918548491 is a deficient number, since it is larger than the sum of its proper divisors (131221221).

918548491 is a wasteful number, since it uses less digits than its factorization.

918548491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131221220.

The product of its digits is 414720, while the sum is 49.

The square root of 918548491 is about 30307.5649137307. The cubic root of 918548491 is about 972.0770637105.

The spelling of 918548491 in words is "nine hundred eighteen million, five hundred forty-eight thousand, four hundred ninety-one".