378315587 has 4 divisors (see below), whose sum is σ = 407416800. Its totient is φ = 349214376.

The previous prime is 378315583. The next prime is 378315589. The reversal of 378315587 is 785513873.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 378315587 - 2² = 378315583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378315583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14550587 + ... + 14550612.

It is an arithmetic number, because the mean of its divisors is an integer number (101854200).

Almost surely, 2^378315587 is an apocalyptic number.

378315587 is a deficient number, since it is larger than the sum of its proper divisors (29101213).

378315587 is a wasteful number, since it uses less digits than its factorization.

378315587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29101212.

The product of its digits is 705600, while the sum is 47.

The square root of 378315587 is about 19450.3364238257. The cubic root of 378315587 is about 723.2438427422.

The spelling of 378315587 in words is "three hundred seventy-eight million, three hundred fifteen thousand, five hundred eighty-seven".