2002115857 has 8 divisors (see below), whose sum is σ = 2422728576. Its totient is φ = 1615152192.

The previous prime is 2002115851. The next prime is 2002115879. The reversal of 2002115857 is 7585112002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2002115857 - 2³ = 2002115849 is a prime.

It is a Duffinian number.

It is a zygodrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (2002115851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8412133 + ... + 8412370.

It is an arithmetic number, because the mean of its divisors is an integer number (302841072).

Almost surely, 2^2002115857 is an apocalyptic number.

It is an amenable number.

2002115857 is a deficient number, since it is larger than the sum of its proper divisors (420612719).

2002115857 is a wasteful number, since it uses less digits than its factorization.

2002115857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16824527.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 2002115857 is about 44745.0092971272. The cubic root of 2002115857 is about 1260.3651954357.

Adding to 2002115857 its reverse (7585112002), we get a palindrome (9587227859).

The spelling of 2002115857 in words is "two billion, two million, one hundred fifteen thousand, eight hundred fifty-seven".