3781021327 has 2 divisors, whose sum is σ = 3781021328. Its totient is φ = 3781021326.

The previous prime is 3781021249. The next prime is 3781021331. The reversal of 3781021327 is 7231201873.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3781021327 - 2²³ = 3772632719 is a prime.

It is a super-2 number, since 2×3781021327² = 28592244550457681858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3781021292 and 3781021301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3781021397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1890510663 + 1890510664.

It is an arithmetic number, because the mean of its divisors is an integer number (1890510664).

Almost surely, 2^3781021327 is an apocalyptic number.

3781021327 is a deficient number, since it is larger than the sum of its proper divisors (1).

3781021327 is an equidigital number, since it uses as much as digits as its factorization.

3781021327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 3781021327 is about 61490.0099772313. The cubic root of 3781021327 is about 1557.8885151285. Note that the first 3 decimals are identical.

The spelling of 3781021327 in words is "three billion, seven hundred eighty-one million, twenty-one thousand, three hundred twenty-seven".