491798741 has 24 divisors (see below), whose sum is σ = 588021120. Its totient is φ = 409924032.

The previous prime is 491798707. The next prime is 491798743. The reversal of 491798741 is 147897194.

It is a de Polignac number, because none of the positive numbers 2^k-491798741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 491798741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491798743) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 411641 + ... + 412833.

It is an arithmetic number, because the mean of its divisors is an integer number (24500880).

Almost surely, 2^491798741 is an apocalyptic number.

It is an amenable number.

491798741 is a deficient number, since it is larger than the sum of its proper divisors (96222379).

491798741 is a wasteful number, since it uses less digits than its factorization.

491798741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433 (or 1426 counting only the distinct ones).

The product of its digits is 508032, while the sum is 50.

The square root of 491798741 is about 22176.5358205469. The cubic root of 491798741 is about 789.3370184109.

The spelling of 491798741 in words is "four hundred ninety-one million, seven hundred ninety-eight thousand, seven hundred forty-one".