4451918 has 4 divisors (see below), whose sum is σ = 6677880. Its totient is φ = 2225958.

The previous prime is 4451893. The next prime is 4451921. The reversal of 4451918 is 8191544.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1112978 + ... + 1112981.

It is an arithmetic number, because the mean of its divisors is an integer number (1669470).

Almost surely, 2^4451918 is an apocalyptic number.

4451918 is a deficient number, since it is larger than the sum of its proper divisors (2225962).

4451918 is a wasteful number, since it uses less digits than its factorization.

4451918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225961.

The product of its digits is 5760, while the sum is 32.

The square root of 4451918 is about 2109.9568715971. The cubic root of 4451918 is about 164.5062435462.

The spelling of 4451918 in words is "four million, four hundred fifty-one thousand, nine hundred eighteen".