2009158515 has 384 divisors, whose sum is σ = 5031936000. Its totient is φ = 731566080.

The previous prime is 2009158493. The next prime is 2009158517. The reversal of 2009158515 is 5158519002.

It is a happy number.

2009158515 is a `hidden beast` number, since 2 + 0 + 0 + 91 + 58 + 515 = 666.

It is not a de Polignac number, because 2009158515 - 2⁷ = 2009158387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2009158515.

It is not an unprimeable number, because it can be changed into a prime (2009158517) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 64811550 + ... + 64811580.

It is an arithmetic number, because the mean of its divisors is an integer number (13104000).

Almost surely, 2^2009158515 is an apocalyptic number.

2009158515 is an abundant number, since it is smaller than the sum of its proper divisors (3022777485).

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

2009158515 is a wasteful number, since it uses less digits than its factorization.

2009158515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 36.

The square root of 2009158515 is about 44823.6379045700. The cubic root of 2009158515 is about 1261.8412894194.

It can be divided in two parts, 20091 and 58515, that added together give a triangular number (78606 = T₃₉₆).

The spelling of 2009158515 in words is "two billion, nine million, one hundred fifty-eight thousand, five hundred fifteen".