491945948 has 48 divisors (see below), whose sum is σ = 980572320. Its totient is φ = 214078464.

The previous prime is 491945941. The next prime is 491945963. The reversal of 491945948 is 849549194.

It is a self number, because there is not a number n which added to its sum of digits gives 491945948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491945941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229136 + ... + 231272.

It is an arithmetic number, because the mean of its divisors is an integer number (20428590).

Almost surely, 2^491945948 is an apocalyptic number.

It is an amenable number.

491945948 is a deficient number, since it is larger than the sum of its proper divisors (488626372).

491945948 is a wasteful number, since it uses less digits than its factorization.

491945948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406 (or 2404 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 53.

The square root of 491945948 is about 22179.8545531751. The cubic root of 491945948 is about 789.4157663033.

The spelling of 491945948 in words is "four hundred ninety-one million, nine hundred forty-five thousand, nine hundred forty-eight".