2009358918 has 48 divisors (see below), whose sum is σ = 4978390560. Its totient is φ = 573775488.

The previous prime is 2009358829. The next prime is 2009358947. The reversal of 2009358918 is 8198539002.

It is a happy number.

2009358918 is a `hidden beast` number, since 200 + 9 + 358 + 91 + 8 = 666.

It is a super-2 number, since 2×2009358918² = 8075046522692261448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 296148 + ... + 302856.

It is an arithmetic number, because the mean of its divisors is an integer number (103716470).

Almost surely, 2^2009358918 is an apocalyptic number.

2009358918 is an abundant number, since it is smaller than the sum of its proper divisors (2969031642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2009358918 is a wasteful number, since it uses less digits than its factorization.

2009358918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9101 (or 9098 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 2009358918 is about 44825.8733099535. The cubic root of 2009358918 is about 1261.8832420364.

The spelling of 2009358918 in words is "two billion, nine million, three hundred fifty-eight thousand, nine hundred eighteen".