491443536 has 40 divisors (see below), whose sum is σ = 1270365120. Its totient is φ = 163710976.

The previous prime is 491443501. The next prime is 491443549. The reversal of 491443536 is 635344194.

It is a junction number, because it is equal to n+sod(n) for n = 491443494 and 491443503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130285 + ... + 134003.

It is an arithmetic number, because the mean of its divisors is an integer number (31759128).

Almost surely, 2^491443536 is an apocalyptic number.

It is an amenable number.

491443536 is an abundant number, since it is smaller than the sum of its proper divisors (778921584).

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

491443536 is a wasteful number, since it uses less digits than its factorization.

491443536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6483 (or 6477 counting only the distinct ones).

The product of its digits is 155520, while the sum is 39.

The square root of 491443536 is about 22168.5257967236. The cubic root of 491443536 is about 789.1469379568.

The spelling of 491443536 in words is "four hundred ninety-one million, four hundred forty-three thousand, five hundred thirty-six".