378731605 has 8 divisors (see below), whose sum is σ = 519403392. Its totient is φ = 259701648.

The previous prime is 378731603. The next prime is 378731651. The reversal of 378731605 is 506137873.

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

It is a cyclic number.

It is not a de Polignac number, because 378731605 - 2¹ = 378731603 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 (378731603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5410417 + ... + 5410486.

It is an arithmetic number, because the mean of its divisors is an integer number (64925424).

Almost surely, 2^378731605 is an apocalyptic number.

378731605 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

378731605 is a deficient number, since it is larger than the sum of its proper divisors (140671787).

378731605 is a wasteful number, since it uses less digits than its factorization.

378731605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10820915.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 378731605 is about 19461.0278505530. The cubic root of 378731605 is about 723.5088527367.

The spelling of 378731605 in words is "three hundred seventy-eight million, seven hundred thirty-one thousand, six hundred five".