491140802 has 4 divisors (see below), whose sum is σ = 736711206. Its totient is φ = 245570400.

The previous prime is 491140787. The next prime is 491140813. The reversal of 491140802 is 208041194.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 377952481 + 113188321 = 19441^2 + 10639^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122785199 + ... + 122785202.

Almost surely, 2^491140802 is an apocalyptic number.

491140802 is a deficient number, since it is larger than the sum of its proper divisors (245570404).

491140802 is a wasteful number, since it uses less digits than its factorization.

491140802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245570403.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 491140802 is about 22161.6967310718. The cubic root of 491140802 is about 788.9848639418.

Adding to 491140802 its reverse (208041194), we get a palindrome (699181996).

The spelling of 491140802 in words is "four hundred ninety-one million, one hundred forty thousand, eight hundred two".