449158918 has 16 divisors (see below), whose sum is σ = 732752496. Its totient is φ = 205250400.

The previous prime is 449158909. The next prime is 449158933. The reversal of 449158918 is 819851944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82896 + ... + 88147.

It is an arithmetic number, because the mean of its divisors is an integer number (45797031).

Almost surely, 2^449158918 is an apocalyptic number.

449158918 is a deficient number, since it is larger than the sum of its proper divisors (283593578).

449158918 is a wasteful number, since it uses less digits than its factorization.

449158918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171159.

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

The square root of 449158918 is about 21193.3696707249. The cubic root of 449158918 is about 765.8317056940.

The spelling of 449158918 in words is "four hundred forty-nine million, one hundred fifty-eight thousand, nine hundred eighteen".