489349918 has 4 divisors (see below), whose sum is σ = 734024880. Its totient is φ = 244674958.

The previous prime is 489349907. The next prime is 489349943. The reversal of 489349918 is 819943984.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 122337478 + ... + 122337481.

It is an arithmetic number, because the mean of its divisors is an integer number (183506220).

Almost surely, 2^489349918 is an apocalyptic number.

489349918 is a deficient number, since it is larger than the sum of its proper divisors (244674962).

489349918 is a wasteful number, since it uses less digits than its factorization.

489349918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244674961.

The product of its digits is 2239488, while the sum is 55.

The square root of 489349918 is about 22121.2548920716. The cubic root of 489349918 is about 788.0247175031.

The spelling of 489349918 in words is "four hundred eighty-nine million, three hundred forty-nine thousand, nine hundred eighteen".