2016509915 has 16 divisors (see below), whose sum is σ = 2766364608. Its totient is φ = 1382317056.

The previous prime is 2016509899. The next prime is 2016509923. The reversal of 2016509915 is 5199056102.

It is a cyclic number.

It is not a de Polignac number, because 2016509915 - 2⁴ = 2016509899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138419 + ... + 152291.

It is an arithmetic number, because the mean of its divisors is an integer number (172897788).

Almost surely, 2^2016509915 is an apocalyptic number.

2016509915 is a deficient number, since it is larger than the sum of its proper divisors (749854693).

2016509915 is a wasteful number, since it uses less digits than its factorization.

2016509915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18038.

The product of its (nonzero) digits is 24300, while the sum is 38.

The square root of 2016509915 is about 44905.5666371108. The cubic root of 2016509915 is about 1263.3784187043.

The spelling of 2016509915 in words is "two billion, sixteen million, five hundred nine thousand, nine hundred fifteen".