491181076 has 6 divisors (see below), whose sum is σ = 859566890. Its totient is φ = 245590536.

The previous prime is 491181029. The next prime is 491181151. The reversal of 491181076 is 670181194.

It can be written as a sum of positive squares in only one way, i.e., 448592400 + 42588676 = 21180^2 + 6526^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 61397631 + ... + 61397638.

Almost surely, 2^491181076 is an apocalyptic number.

It is an amenable number.

491181076 is a deficient number, since it is larger than the sum of its proper divisors (368385814).

491181076 is a wasteful number, since it uses less digits than its factorization.

491181076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122795273 (or 122795271 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 491181076 is about 22162.6053522595. The cubic root of 491181076 is about 789.0064291819.

The spelling of 491181076 in words is "four hundred ninety-one million, one hundred eighty-one thousand, seventy-six".