2015381008 has 80 divisors (see below), whose sum is σ = 4249013760. Its totient is φ = 922521600.

The previous prime is 2015380999. The next prime is 2015381033. The reversal of 2015381008 is 8001835102.

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, 1524988 + ... + 1526308.

It is an arithmetic number, because the mean of its divisors is an integer number (53112672).

Almost surely, 2^2015381008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2015381008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2124506880).

2015381008 is an abundant number, since it is smaller than the sum of its proper divisors (2233632752).

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

2015381008 is a wasteful number, since it uses less digits than its factorization.

2015381008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496 (or 1490 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 2015381008 is about 44892.9950883209. The cubic root of 2015381008 is about 1263.1426147601.

The spelling of 2015381008 in words is "two billion, fifteen million, three hundred eighty-one thousand, eight".