381290563 has 2 divisors, whose sum is σ = 381290564. Its totient is φ = 381290562.

The previous prime is 381290561. The next prime is 381290593. The reversal of 381290563 is 365092183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381290563 - 2¹ = 381290561 is a prime.

Together with 381290561, it forms a pair of twin primes.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (381290561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190645281 + 190645282.

It is an arithmetic number, because the mean of its divisors is an integer number (190645282).

Almost surely, 2^381290563 is an apocalyptic number.

381290563 is a deficient number, since it is larger than the sum of its proper divisors (1).

381290563 is an equidigital number, since it uses as much as digits as its factorization.

381290563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 381290563 is about 19526.6628741319. The cubic root of 381290563 is about 725.1346958615.

The spelling of 381290563 in words is "three hundred eighty-one million, two hundred ninety thousand, five hundred sixty-three".