3805380138 has 64 divisors (see below), whose sum is σ = 9013542912. Its totient is φ = 1048083840.

The previous prime is 3805380091. The next prime is 3805380149. The reversal of 3805380138 is 8310835083.

It is a junction number, because it is equal to n+sod(n) for n = 3805380096 and 3805380105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 336870 + ... + 347982.

It is an arithmetic number, because the mean of its divisors is an integer number (140836608).

Almost surely, 2^3805380138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3805380138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4506771456).

3805380138 is an abundant number, since it is smaller than the sum of its proper divisors (5208162774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3805380138 is a wasteful number, since it uses less digits than its factorization.

3805380138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11419.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 3805380138 is about 61687.7632760339. The cubic root of 3805380138 is about 1561.2268644305.

The spelling of 3805380138 in words is "three billion, eight hundred five million, three hundred eighty thousand, one hundred thirty-eight".