3781095820 has 12 divisors (see below), whose sum is σ = 7940301264. Its totient is φ = 1512438320.

The previous prime is 3781095781. The next prime is 3781095827. The reversal of 3781095820 is 285901873.

It is not an unprimeable number, because it can be changed into a prime (3781095827) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 94527376 + ... + 94527415.

It is an arithmetic number, because the mean of its divisors is an integer number (661691772).

Almost surely, 2^3781095820 is an apocalyptic number.

It is an amenable number.

3781095820 is an abundant number, since it is smaller than the sum of its proper divisors (4159205444).

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

3781095820 is a wasteful number, since it uses less digits than its factorization.

3781095820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189054800 (or 189054798 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 3781095820 is about 61490.6157067890. The cubic root of 3781095820 is about 1557.8987461407.

The spelling of 3781095820 in words is "three billion, seven hundred eighty-one million, ninety-five thousand, eight hundred twenty".