38105381209 has 6 divisors (see below), whose sum is σ = 44326667994. Its totient is φ = 32661755280.

The previous prime is 38105381189. The next prime is 38105381213. The reversal of 38105381209 is 90218350183.

It can be written as a sum of positive squares in only one way, i.e., 38101088025 + 4293184 = 195195^2 + 2072^2 .

It is not a de Polignac number, because 38105381209 - 2¹¹ = 38105379161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38105381309) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 388830372 + ... + 388830469.

It is an arithmetic number, because the mean of its divisors is an integer number (7387777999).

Almost surely, 2^38105381209 is an apocalyptic number.

It is an amenable number.

38105381209 is a deficient number, since it is larger than the sum of its proper divisors (6221286785).

38105381209 is an equidigital number, since it uses as much as digits as its factorization.

38105381209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777660855 (or 777660848 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 38105381209 in words is "thirty-eight billion, one hundred five million, three hundred eighty-one thousand, two hundred nine".