491449148 has 6 divisors (see below), whose sum is σ = 860036016. Its totient is φ = 245724572.

The previous prime is 491449139. The next prime is 491449151. The reversal of 491449148 is 841944194.

It is a junction number, because it is equal to n+sod(n) for n = 491449099 and 491449108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61431140 + ... + 61431147.

It is an arithmetic number, because the mean of its divisors is an integer number (143339336).

Almost surely, 2^491449148 is an apocalyptic number.

It is an amenable number.

491449148 is a deficient number, since it is larger than the sum of its proper divisors (368586868).

491449148 is a wasteful number, since it uses less digits than its factorization.

491449148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122862291 (or 122862289 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 491449148 is about 22168.6523722124. The cubic root of 491449148 is about 789.1499418121.

The spelling of 491449148 in words is "four hundred ninety-one million, four hundred forty-nine thousand, one hundred forty-eight".