1018289989 has 8 divisors (see below), whose sum is σ = 1027504800. Its totient is φ = 1009107216.

The previous prime is 1018289957. The next prime is 1018290037. The reversal of 1018289989 is 9899828101.

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 1018289989 - 2⁵ = 1018289957 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 (1018289929) 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, 58294 + ... + 73720.

It is an arithmetic number, because the mean of its divisors is an integer number (128438100).

Almost surely, 2^1018289989 is an apocalyptic number.

It is an amenable number.

1018289989 is a deficient number, since it is larger than the sum of its proper divisors (9214811).

1018289989 is a wasteful number, since it uses less digits than its factorization.

1018289989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16019.

The product of its (nonzero) digits is 746496, while the sum is 55.

The square root of 1018289989 is about 31910.6563548919. The cubic root of 1018289989 is about 1006.0598668371.

The spelling of 1018289989 in words is "one billion, eighteen million, two hundred eighty-nine thousand, nine hundred eighty-nine".