918449541487 has 4 divisors (see below), whose sum is σ = 919616568376. Its totient is φ = 917282514600.

The previous prime is 918449541463. The next prime is 918449541491. The reversal of 918449541487 is 784145944819.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784145944819 = 19 ⋅41270839201.

It is a cyclic number.

It is not a de Polignac number, because 918449541487 - 2²³ = 918441152879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918449545487) 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, 583512264 + ... + 583513837.

It is an arithmetic number, because the mean of its divisors is an integer number (229904142094).

Almost surely, 2^918449541487 is an apocalyptic number.

918449541487 is a deficient number, since it is larger than the sum of its proper divisors (1167026889).

918449541487 is a wasteful number, since it uses less digits than its factorization.

918449541487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167026888.

The product of its digits is 46448640, while the sum is 64.

The spelling of 918449541487 in words is "nine hundred eighteen billion, four hundred forty-nine million, five hundred forty-one thousand, four hundred eighty-seven".