3864381181 has 2 divisors, whose sum is σ = 3864381182. Its totient is φ = 3864381180.

The previous prime is 3864381173. The next prime is 3864381203. The reversal of 3864381181 is 1811834683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2535122500 + 1329258681 = 50350^2 + 36459^2 .

It is a cyclic number.

It is not a de Polignac number, because 3864381181 - 2³ = 3864381173 is a prime.

It is a super-2 number, since 2×3864381181² = 29866883824133909522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3864381151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1932190590 + 1932190591.

It is an arithmetic number, because the mean of its divisors is an integer number (1932190591).

Almost surely, 2^3864381181 is an apocalyptic number.

It is an amenable number.

3864381181 is a deficient number, since it is larger than the sum of its proper divisors (1).

3864381181 is an equidigital number, since it uses as much as digits as its factorization.

3864381181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 43.

The square root of 3864381181 is about 62164.1470704779. The cubic root of 3864381181 is about 1569.2542715908.

The spelling of 3864381181 in words is "three billion, eight hundred sixty-four million, three hundred eighty-one thousand, one hundred eighty-one".