491100802 has 4 divisors (see below), whose sum is σ = 736651206. Its totient is φ = 245550400.

The previous prime is 491100793. The next prime is 491100817. The reversal of 491100802 is 208001194.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 208001194 = 2 ⋅104000597.

It can be written as a sum of positive squares in only one way, i.e., 337861161 + 153239641 = 18381^2 + 12379^2 .

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, 122775199 + ... + 122775202.

Almost surely, 2^491100802 is an apocalyptic number.

491100802 is a deficient number, since it is larger than the sum of its proper divisors (245550404).

491100802 is a wasteful number, since it uses less digits than its factorization.

491100802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245550403.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 491100802 is about 22160.7942547193. The cubic root of 491100802 is about 788.9634442517.

Adding to 491100802 its reverse (208001194), we get a palindrome (699101996).

The spelling of 491100802 in words is "four hundred ninety-one million, one hundred thousand, eight hundred two".