3812381261 has 12 divisors (see below), whose sum is σ = 4307691168. Its totient is φ = 3366112464.

The previous prime is 3812381219. The next prime is 3812381297. The reversal of 3812381261 is 1621832183.

It is a happy number.

3812381261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3812381261 - 2⁶ = 3812381197 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 (3812383261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 486515 + ... + 494288.

It is an arithmetic number, because the mean of its divisors is an integer number (358974264).

Almost surely, 2^3812381261 is an apocalyptic number.

It is an amenable number.

3812381261 is a deficient number, since it is larger than the sum of its proper divisors (495309907).

3812381261 is a wasteful number, since it uses less digits than its factorization.

3812381261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980852 (or 980839 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 3812381261 is about 61744.4836483390. The cubic root of 3812381261 is about 1562.1837241534.

The spelling of 3812381261 in words is "three billion, eight hundred twelve million, three hundred eighty-one thousand, two hundred sixty-one".