381071783 has 2 divisors, whose sum is σ = 381071784. Its totient is φ = 381071782.

The previous prime is 381071773. The next prime is 381071807. The reversal of 381071783 is 387170183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381071783 - 2⁴ = 381071767 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381071773) 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 as a sum of consecutive naturals, namely, 190535891 + 190535892.

It is an arithmetic number, because the mean of its divisors is an integer number (190535892).

Almost surely, 2^381071783 is an apocalyptic number.

381071783 is a deficient number, since it is larger than the sum of its proper divisors (1).

381071783 is an equidigital number, since it uses as much as digits as its factorization.

381071783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 381071783 is about 19521.0599865888. The cubic root of 381071783 is about 724.9959780990.

The spelling of 381071783 in words is "three hundred eighty-one million, seventy-one thousand, seven hundred eighty-three".