1518989 has 8 divisors (see below), whose sum is σ = 1597632. Its totient is φ = 1441440.

The previous prime is 1518977. The next prime is 1519039. The reversal of 1518989 is 9898151.

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

It is a cyclic number.

It is not a de Polignac number, because 1518989 - 2⁴ = 1518973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1518949) 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, 4697 + ... + 5009.

It is an arithmetic number, because the mean of its divisors is an integer number (199704).

2^1518989 is an apocalyptic number.

It is an amenable number.

1518989 is a deficient number, since it is larger than the sum of its proper divisors (78643).

1518989 is a wasteful number, since it uses less digits than its factorization.

1518989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547.

The product of its digits is 25920, while the sum is 41.

The square root of 1518989 is about 1232.4727177508. The cubic root of 1518989 is about 114.9524441051.

The spelling of 1518989 in words is "one million, five hundred eighteen thousand, nine hundred eighty-nine".