489728168139 has 48 divisors (see below), whose sum is σ = 770280024480. Its totient is φ = 275904921600.

The previous prime is 489728168131. The next prime is 489728168161. The reversal of 489728168139 is 931861827984.

It is not a de Polignac number, because 489728168139 - 2³ = 489728168131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489728168139.

It is not an unprimeable number, because it can be changed into a prime (489728168131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33999339 + ... + 34013739.

It is an arithmetic number, because the mean of its divisors is an integer number (16047500510).

Almost surely, 2^489728168139 is an apocalyptic number.

489728168139 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

489728168139 is a deficient number, since it is larger than the sum of its proper divisors (280551856341).

489728168139 is a wasteful number, since it uses less digits than its factorization.

489728168139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17660 (or 17653 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 66.

The spelling of 489728168139 in words is "four hundred eighty-nine billion, seven hundred twenty-eight million, one hundred sixty-eight thousand, one hundred thirty-nine".