494511831 has 16 divisors (see below), whose sum is σ = 799211520. Its totient is φ = 299703960.

The previous prime is 494511781. The next prime is 494511833. The reversal of 494511831 is 138115494.

It is not a de Polignac number, because 494511831 - 2⁹ = 494511319 is a prime.

It is a super-2 number, since 2×494511831² = 489083901997945122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494511833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 832215 + ... + 832808.

It is an arithmetic number, because the mean of its divisors is an integer number (49950720).

Almost surely, 2^494511831 is an apocalyptic number.

494511831 is a deficient number, since it is larger than the sum of its proper divisors (304699689).

494511831 is a wasteful number, since it uses less digits than its factorization.

494511831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665043 (or 1665037 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 494511831 is about 22237.6219726840. The cubic root of 494511831 is about 790.7858606299.

The spelling of 494511831 in words is "four hundred ninety-four million, five hundred eleven thousand, eight hundred thirty-one".