491097610 has 16 divisors (see below), whose sum is σ = 922409856. Its totient is φ = 187898128.

The previous prime is 491097589. The next prime is 491097611. The reversal of 491097610 is 16790194.

It is a self number, because there is not a number n which added to its sum of digits gives 491097610.

It is not an unprimeable number, because it can be changed into a prime (491097611) 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, 1067374 + ... + 1067833.

It is an arithmetic number, because the mean of its divisors is an integer number (57650616).

Almost surely, 2^491097610 is an apocalyptic number.

491097610 is a deficient number, since it is larger than the sum of its proper divisors (431312246).

491097610 is a wasteful number, since it uses less digits than its factorization.

491097610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135237.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 491097610 is about 22160.7222355229. The cubic root of 491097610 is about 788.9617349103.

The spelling of 491097610 in words is "four hundred ninety-one million, ninety-seven thousand, six hundred ten".