3781894331 has 2 divisors, whose sum is σ = 3781894332. Its totient is φ = 3781894330.

The previous prime is 3781894271. The next prime is 3781894367. The reversal of 3781894331 is 1334981873.

3781894331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (1334981873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3781894331 - 2⁶ = 3781894267 is a prime.

It is a super-2 number, since 2×3781894331² = 28605449461699875122, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (3781893331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1890947165 + 1890947166.

It is an arithmetic number, because the mean of its divisors is an integer number (1890947166).

Almost surely, 2^3781894331 is an apocalyptic number.

3781894331 is a deficient number, since it is larger than the sum of its proper divisors (1).

3781894331 is an equidigital number, since it uses as much as digits as its factorization.

3781894331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 47.

The square root of 3781894331 is about 61497.1083141313. The cubic root of 3781894331 is about 1558.0084067421.

The spelling of 3781894331 in words is "three billion, seven hundred eighty-one million, eight hundred ninety-four thousand, three hundred thirty-one".