491715016 has 32 divisors (see below), whose sum is σ = 996803640. Its totient is φ = 226050048.

The previous prime is 491715013. The next prime is 491715017. The reversal of 491715016 is 610517194.

It can be written as a sum of positive squares in 4 ways, for example, as 491508900 + 206116 = 22170^2 + 454^2 .

It is not an unprimeable number, because it can be changed into a prime (491715013) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 17530 + ... + 35926.

Almost surely, 2^491715016 is an apocalyptic number.

It is an amenable number.

491715016 is an abundant number, since it is smaller than the sum of its proper divisors (505088624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491715016 is a wasteful number, since it uses less digits than its factorization.

491715016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18673 (or 18669 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 491715016 is about 22174.6480468124. The cubic root of 491715016 is about 789.2922229916.

The spelling of 491715016 in words is "four hundred ninety-one million, seven hundred fifteen thousand, sixteen".