2001847391 has 8 divisors (see below), whose sum is σ = 2136075120. Its totient is φ = 1870506432.

The previous prime is 2001847361. The next prime is 2001847411. The reversal of 2001847391 is 1937481002.

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 2001847391 - 2¹⁸ = 2001585247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001847321) 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, 720260 + ... + 723033.

It is an arithmetic number, because the mean of its divisors is an integer number (267009390).

Almost surely, 2^2001847391 is an apocalyptic number.

2001847391 is a deficient number, since it is larger than the sum of its proper divisors (134227729).

2001847391 is a wasteful number, since it uses less digits than its factorization.

2001847391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443385.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 2001847391 is about 44742.0092418747. The cubic root of 2001847391 is about 1260.3088583151.

The spelling of 2001847391 in words is "two billion, one million, eight hundred forty-seven thousand, three hundred ninety-one".