3778181181 has 12 divisors (see below), whose sum is σ = 5694650208. Its totient is φ = 2409274824.

The previous prime is 3778181177. The next prime is 3778181189. The reversal of 3778181181 is 1811818773.

3778181181 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 3778181181 - 2² = 3778181177 is a prime.

It is a super-2 number, since 2×3778181181² = 28549306072925109522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3778181189) 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, 9125835 + ... + 9126248.

It is an arithmetic number, because the mean of its divisors is an integer number (474554184).

Almost surely, 2^3778181181 is an apocalyptic number.

It is an amenable number.

3778181181 is a deficient number, since it is larger than the sum of its proper divisors (1916469027).

3778181181 is a wasteful number, since it uses less digits than its factorization.

3778181181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18252112 (or 18252109 counting only the distinct ones).

The product of its digits is 75264, while the sum is 45.

The square root of 3778181181 is about 61466.9112693976. The cubic root of 3778181181 is about 1557.4983437276.

The spelling of 3778181181 in words is "three billion, seven hundred seventy-eight million, one hundred eighty-one thousand, one hundred eighty-one".