2005351381 has 8 divisors (see below), whose sum is σ = 2188200384. Its totient is φ = 1822593120.

The previous prime is 2005351379. The next prime is 2005351427. The reversal of 2005351381 is 1831535002.

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 2005351381 - 2¹ = 2005351379 is a prime.

It is a super-2 number, since 2×2005351381² = 8042868322557214322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005351981) 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, 28576 + ... + 69478.

It is an arithmetic number, because the mean of its divisors is an integer number (273525048).

Almost surely, 2^2005351381 is an apocalyptic number.

It is an amenable number.

2005351381 is a deficient number, since it is larger than the sum of its proper divisors (182849003).

2005351381 is a wasteful number, since it uses less digits than its factorization.

2005351381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45371.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 2005351381 is about 44781.1498400834. The cubic root of 2005351381 is about 1261.0437687348.

Adding to 2005351381 its reverse (1831535002), we get a palindrome (3836886383).

The spelling of 2005351381 in words is "two billion, five million, three hundred fifty-one thousand, three hundred eighty-one".