2018032609 has 4 divisors (see below), whose sum is σ = 2019342016. Its totient is φ = 2016723204.

The previous prime is 2018032603. The next prime is 2018032631. The reversal of 2018032609 is 9062308102.

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 2018032609 - 2¹¹ = 2018030561 is a prime.

It is a super-2 number, since 2×2018032609² = 8144911221974693762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2018032603) 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, 652389 + ... + 655474.

It is an arithmetic number, because the mean of its divisors is an integer number (504835504).

Almost surely, 2^2018032609 is an apocalyptic number.

It is an amenable number.

2018032609 is a deficient number, since it is larger than the sum of its proper divisors (1309407).

2018032609 is a wasteful number, since it uses less digits than its factorization.

2018032609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309406.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 2018032609 is about 44922.5178390526. The cubic root of 2018032609 is about 1263.6963367588.

The spelling of 2018032609 in words is "two billion, eighteen million, thirty-two thousand, six hundred nine".