489520218381 has 8 divisors (see below), whose sum is σ = 652876414944. Its totient is φ = 326255417040.

The previous prime is 489520218379. The next prime is 489520218449. The reversal of 489520218381 is 183812025984.

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

It is not a de Polignac number, because 489520218381 - 2¹ = 489520218379 is a prime.

It is a super-2 number, since 2×489520218381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489520218331) 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, 22836306 + ... + 22857731.

It is an arithmetic number, because the mean of its divisors is an integer number (81609551868).

Almost surely, 2^489520218381 is an apocalyptic number.

It is an amenable number.

489520218381 is a deficient number, since it is larger than the sum of its proper divisors (163356196563).

489520218381 is a wasteful number, since it uses less digits than its factorization.

489520218381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45697611.

The product of its (nonzero) digits is 1105920, while the sum is 51.

The spelling of 489520218381 in words is "four hundred eighty-nine billion, five hundred twenty million, two hundred eighteen thousand, three hundred eighty-one".