3813038138181 has 16 divisors (see below), whose sum is σ = 5363712944640. Its totient is φ = 2402798402160.

The previous prime is 3813038138179. The next prime is 3813038138191. The reversal of 3813038138181 is 1818318303183.

It is not a de Polignac number, because 3813038138181 - 2¹ = 3813038138179 is a prime.

It is a super-2 number, since 2×3813038138181² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3813038138181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3813038138191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75477465 + ... + 75527966.

It is an arithmetic number, because the mean of its divisors is an integer number (335232059040).

Almost surely, 2^{3813038138181} is an apocalyptic number.

It is an amenable number.

3813038138181 is a deficient number, since it is larger than the sum of its proper divisors (1550674806459).

3813038138181 is a wasteful number, since it uses less digits than its factorization.

3813038138181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151005896.

The product of its (nonzero) digits is 331776, while the sum is 48.

The spelling of 3813038138181 in words is "three trillion, eight hundred thirteen billion, thirty-eight million, one hundred thirty-eight thousand, one hundred eighty-one".