378505583 has 2 divisors, whose sum is σ = 378505584. Its totient is φ = 378505582.

The previous prime is 378505577. The next prime is 378505607. The reversal of 378505583 is 385505873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378505583 - 2¹⁶ = 378440047 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 (378505553) 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, 189252791 + 189252792.

It is an arithmetic number, because the mean of its divisors is an integer number (189252792).

Almost surely, 2^378505583 is an apocalyptic number.

378505583 is a deficient number, since it is larger than the sum of its proper divisors (1).

378505583 is an equidigital number, since it uses as much as digits as its factorization.

378505583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504000, while the sum is 44.

The square root of 378505583 is about 19455.2199422160. The cubic root of 378505583 is about 723.3648972661.

The spelling of 378505583 in words is "three hundred seventy-eight million, five hundred five thousand, five hundred eighty-three".