491042036 has 12 divisors (see below), whose sum is σ = 888955620. Its totient is φ = 237054720.

The previous prime is 491042017. The next prime is 491042039. The reversal of 491042036 is 630240194.

It can be written as a sum of positive squares in 2 ways, for example, as 353214436 + 137827600 = 18794^2 + 11740^2 .

It is a super-2 number, since 2×491042036² = 482244562238050592, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491042039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2116445 + ... + 2116676.

It is an arithmetic number, because the mean of its divisors is an integer number (74079635).

Almost surely, 2^491042036 is an apocalyptic number.

It is an amenable number.

491042036 is a deficient number, since it is larger than the sum of its proper divisors (397913584).

491042036 is a wasteful number, since it uses less digits than its factorization.

491042036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4233154 (or 4233152 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 491042036 is about 22159.4683149213. The cubic root of 491042036 is about 788.9319734042.

The spelling of 491042036 in words is "four hundred ninety-one million, forty-two thousand, thirty-six".