491905370 has 64 divisors (see below), whose sum is σ = 1067302656. Its totient is φ = 161018880.

The previous prime is 491905369. The next prime is 491905373. The reversal of 491905370 is 73509194.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (491905373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37292 + ... + 48728.

It is an arithmetic number, because the mean of its divisors is an integer number (16676604).

Almost surely, 2^491905370 is an apocalyptic number.

491905370 is an abundant number, since it is smaller than the sum of its proper divisors (575397286).

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

491905370 is a wasteful number, since it uses less digits than its factorization.

491905370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11495.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 491905370 is about 22178.9397853008. The cubic root of 491905370 is about 789.3940608064.

The spelling of 491905370 in words is "four hundred ninety-one million, nine hundred five thousand, three hundred seventy".