491295178 has 16 divisors (see below), whose sum is σ = 808385760. Its totient is φ = 222080400.

The previous prime is 491295173. The next prime is 491295191. The reversal of 491295178 is 871592194.

It is not an unprimeable number, because it can be changed into a prime (491295173) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 57708 + ... + 65671.

It is an arithmetic number, because the mean of its divisors is an integer number (50524110).

Almost surely, 2^491295178 is an apocalyptic number.

491295178 is a deficient number, since it is larger than the sum of its proper divisors (317090582).

491295178 is a wasteful number, since it uses less digits than its factorization.

491295178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123573.

The product of its digits is 181440, while the sum is 46.

The square root of 491295178 is about 22165.1794037405. The cubic root of 491295178 is about 789.0675201900.

The spelling of 491295178 in words is "four hundred ninety-one million, two hundred ninety-five thousand, one hundred seventy-eight".