378305641 has 16 divisors (see below), whose sum is σ = 463587840. Its totient is φ = 301317120.

The previous prime is 378305639. The next prime is 378305657. The reversal of 378305641 is 146503873.

It is a cyclic number.

It is not a de Polignac number, because 378305641 - 2¹ = 378305639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 378305641.

It is not an unprimeable number, because it can be changed into a prime (378305621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10720 + ... + 29521.

It is an arithmetic number, because the mean of its divisors is an integer number (28974240).

Almost surely, 2^378305641 is an apocalyptic number.

It is an amenable number.

378305641 is a deficient number, since it is larger than the sum of its proper divisors (85282199).

378305641 is a wasteful number, since it uses less digits than its factorization.

378305641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40344.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 378305641 is about 19450.0807453337. The cubic root of 378305641 is about 723.2375046067.

The spelling of 378305641 in words is "three hundred seventy-eight million, three hundred five thousand, six hundred forty-one".