378618505 has 8 divisors (see below), whose sum is σ = 460741824. Its totient is φ = 298628400.

The previous prime is 378618439. The next prime is 378618523. The reversal of 378618505 is 505816873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 378618505 - 2¹¹ = 378616457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532911 + ... + 533620.

It is an arithmetic number, because the mean of its divisors is an integer number (57592728).

Almost surely, 2^378618505 is an apocalyptic number.

It is an amenable number.

378618505 is a deficient number, since it is larger than the sum of its proper divisors (82123319).

378618505 is a wasteful number, since it uses less digits than its factorization.

378618505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066607.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 378618505 is about 19458.1218261167. The cubic root of 378618505 is about 723.4368254779.

The spelling of 378618505 in words is "three hundred seventy-eight million, six hundred eighteen thousand, five hundred five".