2001355193 has 8 divisors (see below), whose sum is σ = 2031173640. Its totient is φ = 1971699840.

The previous prime is 2001355183. The next prime is 2001355217. The reversal of 2001355193 is 3915531002.

It can be written as a sum of positive squares in 4 ways, for example, as 26708224 + 1974646969 = 5168^2 + 44437^2 .

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 2001355193 - 2⁶ = 2001355129 is a prime.

It is a super-3 number, since 3×2001355193³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001355183) 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, 15938 + ... + 65243.

It is an arithmetic number, because the mean of its divisors is an integer number (253896705).

Almost surely, 2^2001355193 is an apocalyptic number.

It is an amenable number.

2001355193 is a deficient number, since it is larger than the sum of its proper divisors (29818447).

2001355193 is an equidigital number, since it uses as much as digits as its factorization.

2001355193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81547.

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 2001355193 is about 44736.5085025642. The cubic root of 2001355193 is about 1260.2055583418.

Adding to 2001355193 its reverse (3915531002), we get a palindrome (5916886195).

The spelling of 2001355193 in words is "two billion, one million, three hundred fifty-five thousand, one hundred ninety-three".