489018157 has 4 divisors (see below), whose sum is σ = 510279840. Its totient is φ = 467756476.

The previous prime is 489018133. The next prime is 489018163. The reversal of 489018157 is 751810984.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 489018157 - 2¹¹ = 489016109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489018457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10630807 + ... + 10630852.

It is an arithmetic number, because the mean of its divisors is an integer number (127569960).

Almost surely, 2^489018157 is an apocalyptic number.

It is an amenable number.

489018157 is a deficient number, since it is larger than the sum of its proper divisors (21261683).

489018157 is a wasteful number, since it uses less digits than its factorization.

489018157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21261682.

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 489018157 is about 22113.7549276463. The cubic root of 489018157 is about 787.8465934503.

The spelling of 489018157 in words is "four hundred eighty-nine million, eighteen thousand, one hundred fifty-seven".