2009358916 has 6 divisors (see below), whose sum is σ = 3516378110. Its totient is φ = 1004679456.

The previous prime is 2009358829. The next prime is 2009358947. The reversal of 2009358916 is 6198539002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1940402500 + 68956416 = 44050^2 + 8304^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251169861 + ... + 251169868.

Almost surely, 2^2009358916 is an apocalyptic number.

It is an amenable number.

2009358916 is a deficient number, since it is larger than the sum of its proper divisors (1507019194).

2009358916 is a wasteful number, since it uses less digits than its factorization.

2009358916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502339733 (or 502339731 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 2009358916 is about 44825.8732876449. The cubic root of 2009358916 is about 1261.8832416177.

The spelling of 2009358916 in words is "two billion, nine million, three hundred fifty-eight thousand, nine hundred sixteen".