489158685 has 48 divisors (see below), whose sum is σ = 880841520. Its totient is φ = 250905600.

The previous prime is 489158651. The next prime is 489158701. The reversal of 489158685 is 586851984.

It is a happy number.

489158685 is a `hidden beast` number, since 489 + 1 + 5 + 86 + 85 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 13351716 + 475806969 = 3654^2 + 21813^2 .

It is not a de Polignac number, because 489158685 - 2⁸ = 489158429 is a prime.

It is a super-2 number, since 2×489158685² = 478552438221858450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 146535 + ... + 149835.

It is an arithmetic number, because the mean of its divisors is an integer number (18350865).

Almost surely, 2^489158685 is an apocalyptic number.

489158685 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

489158685 is a deficient number, since it is larger than the sum of its proper divisors (391682835).

489158685 is a wasteful number, since it uses less digits than its factorization.

489158685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3438 (or 3435 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 54.

The square root of 489158685 is about 22116.9320883345. The cubic root of 489158685 is about 787.9220534313.

It can be divided in two parts, 48915 and 8685, that added together give a square (57600 = 240²).

The spelling of 489158685 in words is "four hundred eighty-nine million, one hundred fifty-eight thousand, six hundred eighty-five".