3782986381 has 2 divisors, whose sum is σ = 3782986382. Its totient is φ = 3782986380.

The previous prime is 3782986379. The next prime is 3782986453. The reversal of 3782986381 is 1836892873.

3782986381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3405306025 + 377680356 = 58355^2 + 19434^2 .

It is a cyclic number.

It is not a de Polignac number, because 3782986381 - 2¹ = 3782986379 is a prime.

It is a super-2 number, since 2×3782986381² = 28621971917662954322, which contains 22 as substring.

Together with 3782986379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3782986681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1891493190 + 1891493191.

It is an arithmetic number, because the mean of its divisors is an integer number (1891493191).

Almost surely, 2^3782986381 is an apocalyptic number.

It is an amenable number.

3782986381 is a deficient number, since it is larger than the sum of its proper divisors (1).

3782986381 is an equidigital number, since it uses as much as digits as its factorization.

3782986381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 55.

The square root of 3782986381 is about 61505.9865460266. The cubic root of 3782986381 is about 1558.1583544660.

The spelling of 3782986381 in words is "three billion, seven hundred eighty-two million, nine hundred eighty-six thousand, three hundred eighty-one".