491461793 has 8 divisors (see below), whose sum is σ = 505080576. Its totient is φ = 477920800.

The previous prime is 491461759. The next prime is 491461829. The reversal of 491461793 is 397164194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 491461793 - 2¹² = 491457697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491461193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6521 + ... + 32022.

It is an arithmetic number, because the mean of its divisors is an integer number (63135072).

Almost surely, 2^491461793 is an apocalyptic number.

It is an amenable number.

491461793 is a deficient number, since it is larger than the sum of its proper divisors (13618783).

491461793 is a wasteful number, since it uses less digits than its factorization.

491461793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38895.

The product of its digits is 163296, while the sum is 44.

The square root of 491461793 is about 22168.9375703934. The cubic root of 491461793 is about 789.1567100372.

The spelling of 491461793 in words is "four hundred ninety-one million, four hundred sixty-one thousand, seven hundred ninety-three".