491914743 has 16 divisors (see below), whose sum is σ = 663448800. Its totient is φ = 324172800.

The previous prime is 491914721. The next prime is 491914781. The reversal of 491914743 is 347419194.

It is not a de Polignac number, because 491914743 - 2¹³ = 491906551 is a prime.

It is a super-2 number, since 2×491914743² = 483960228761512098, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 491914695 and 491914704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491914793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304923 + ... + 306531.

It is an arithmetic number, because the mean of its divisors is an integer number (41465550).

Almost surely, 2^491914743 is an apocalyptic number.

491914743 is a deficient number, since it is larger than the sum of its proper divisors (171534057).

491914743 is a wasteful number, since it uses less digits than its factorization.

491914743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722.

The product of its digits is 108864, while the sum is 42.

The square root of 491914743 is about 22179.1510883532. The cubic root of 491914743 is about 789.3990746051.

The spelling of 491914743 in words is "four hundred ninety-one million, nine hundred fourteen thousand, seven hundred forty-three".