378240609 has 8 divisors (see below), whose sum is σ = 504707872. Its totient is φ = 251966880.

The previous prime is 378240593. The next prime is 378240637. The reversal of 378240609 is 906042873.

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

It is not a de Polignac number, because 378240609 - 2⁴ = 378240593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378240659) 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, 43759 + ... + 51684.

It is an arithmetic number, because the mean of its divisors is an integer number (63088484).

Almost surely, 2^378240609 is an apocalyptic number.

It is an amenable number.

378240609 is a deficient number, since it is larger than the sum of its proper divisors (126467263).

378240609 is a wasteful number, since it uses less digits than its factorization.

378240609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96767.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 378240609 is about 19448.4089066432. The cubic root of 378240609 is about 723.1960599196.

The spelling of 378240609 in words is "three hundred seventy-eight million, two hundred forty thousand, six hundred nine".