491576036 has 18 divisors (see below), whose sum is σ = 1000708758. Its totient is φ = 210675360.

The previous prime is 491576027. The next prime is 491576047. The reversal of 491576036 is 630675194.

It can be written as a sum of positive squares in only one way, i.e., 483736036 + 7840000 = 21994^2 + 2800^2 .

It is a junction number, because it is equal to n+sod(n) for n = 491575984 and 491576002.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1253825 + ... + 1254216.

It is an arithmetic number, because the mean of its divisors is an integer number (55594931).

Almost surely, 2^491576036 is an apocalyptic number.

It is an amenable number.

491576036 is an abundant number, since it is smaller than the sum of its proper divisors (509132722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491576036 is a wasteful number, since it uses less digits than its factorization.

491576036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508059 (or 2508050 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 491576036 is about 22171.5140664773. The cubic root of 491576036 is about 789.2178532407.

The spelling of 491576036 in words is "four hundred ninety-one million, five hundred seventy-six thousand, thirty-six".