491613441 has 12 divisors (see below), whose sum is σ = 720491856. Its totient is φ = 297947320.

The previous prime is 491613439. The next prime is 491613449. The reversal of 491613441 is 144316194.

It is not a de Polignac number, because 491613441 - 2¹ = 491613439 is a prime.

It is a super-3 number, since 3×491613441³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (491613449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 676791 + ... + 677516.

It is an arithmetic number, because the mean of its divisors is an integer number (60040988).

Almost surely, 2^491613441 is an apocalyptic number.

It is an amenable number.

491613441 is a deficient number, since it is larger than the sum of its proper divisors (228878415).

491613441 is a wasteful number, since it uses less digits than its factorization.

491613441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354332 (or 1354321 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 491613441 is about 22172.3575877713. The cubic root of 491613441 is about 789.2378704526.

The spelling of 491613441 in words is "four hundred ninety-one million, six hundred thirteen thousand, four hundred forty-one".