378281583 has 40 divisors (see below), whose sum is σ = 597681920. Its totient is φ = 237770640.

The previous prime is 378281581. The next prime is 378281587. The reversal of 378281583 is 385182873.

It is not a de Polignac number, because 378281583 - 2¹ = 378281581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378281581) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 416616 + ... + 417522.

It is an arithmetic number, because the mean of its divisors is an integer number (14942048).

Almost surely, 2^378281583 is an apocalyptic number.

378281583 is a deficient number, since it is larger than the sum of its proper divisors (219400337).

378281583 is a wasteful number, since it uses less digits than its factorization.

378281583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209 (or 1200 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 378281583 is about 19449.4622804848. The cubic root of 378281583 is about 723.2221730733. Note that the first 3 decimals are identical.

It can be divided in two parts, 378 and 281583, that added together give a square (281961 = 531²).

The spelling of 378281583 in words is "three hundred seventy-eight million, two hundred eighty-one thousand, five hundred eighty-three".