3813811001 has 72 divisors (see below), whose sum is σ = 5348015424. Its totient is φ = 2639070720.

The previous prime is 3813810953. The next prime is 3813811007. The reversal of 3813811001 is 1001183183.

It is not a de Polignac number, because 3813811001 - 2¹⁰ = 3813809977 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 (3813811007) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 42851765 + ... + 42851853.

It is an arithmetic number, because the mean of its divisors is an integer number (74277992).

Almost surely, 2^3813811001 is an apocalyptic number.

It is an amenable number.

3813811001 is a deficient number, since it is larger than the sum of its proper divisors (1534204423).

3813811001 is a wasteful number, since it uses less digits than its factorization.

3813811001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 3813811001 is about 61756.0604394419. The cubic root of 3813811001 is about 1562.3789859644.

Adding to 3813811001 its reverse (1001183183), we get a palindrome (4814994184).

The spelling of 3813811001 in words is "three billion, eight hundred thirteen million, eight hundred eleven thousand, one".