381316426783 has 2 divisors, whose sum is σ = 381316426784. Its totient is φ = 381316426782.

The previous prime is 381316426781. The next prime is 381316426823. The reversal of 381316426783 is 387624613183.

It is a weak prime.

It is an emirp because it is prime and its reverse (387624613183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381316426783 - 2¹ = 381316426781 is a prime.

Together with 381316426781, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 381316426783.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381316426781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190658213391 + 190658213392.

It is an arithmetic number, because the mean of its divisors is an integer number (190658213392).

Almost surely, 2^381316426783 is an apocalyptic number.

381316426783 is a deficient number, since it is larger than the sum of its proper divisors (1).

381316426783 is an equidigital number, since it uses as much as digits as its factorization.

381316426783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 52.

The spelling of 381316426783 in words is "three hundred eighty-one billion, three hundred sixteen million, four hundred twenty-six thousand, seven hundred eighty-three".