2001244857 has 8 divisors (see below), whose sum is σ = 2668680576. Its totient is φ = 1333986192.

The previous prime is 2001244853. The next prime is 2001244859. The reversal of 2001244857 is 7584421002.

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

It is not a de Polignac number, because 2001244857 - 2² = 2001244853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001244853) 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, 15153 + ... + 65054.

It is an arithmetic number, because the mean of its divisors is an integer number (333585072).

Almost surely, 2^2001244857 is an apocalyptic number.

It is an amenable number.

2001244857 is a deficient number, since it is larger than the sum of its proper divisors (667435719).

2001244857 is an equidigital number, since it uses as much as digits as its factorization.

2001244857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88527.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 2001244857 is about 44735.2753093127. The cubic root of 2001244857 is about 1260.1823992683.

Adding to 2001244857 its reverse (7584421002), we get a palindrome (9585665859).

The spelling of 2001244857 in words is "two billion, one million, two hundred forty-four thousand, eight hundred fifty-seven".