491524923 has 8 divisors (see below), whose sum is σ = 655907328. Its totient is φ = 327412904.

The previous prime is 491524907. The next prime is 491524949. The reversal of 491524923 is 329425194.

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 491524923 - 2⁴ = 491524907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (491524903) 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, 63315 + ... + 70652.

It is an arithmetic number, because the mean of its divisors is an integer number (81988416).

Almost surely, 2^491524923 is an apocalyptic number.

491524923 is a deficient number, since it is larger than the sum of its proper divisors (164382405).

491524923 is a wasteful number, since it uses less digits than its factorization.

491524923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135193.

The product of its digits is 77760, while the sum is 39.

The square root of 491524923 is about 22170.3613637667. The cubic root of 491524923 is about 789.1904985777.

The spelling of 491524923 in words is "four hundred ninety-one million, five hundred twenty-four thousand, nine hundred twenty-three".