378918306 has 48 divisors (see below), whose sum is σ = 900854136. Its totient is φ = 114386688.

The previous prime is 378918289. The next prime is 378918317. The reversal of 378918306 is 603819873.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 243079281 + 135839025 = 15591^2 + 11655^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2875 + ... + 27678.

Almost surely, 2^378918306 is an apocalyptic number.

378918306 is an abundant number, since it is smaller than the sum of its proper divisors (521935830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

378918306 is a wasteful number, since it uses less digits than its factorization.

378918306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30627 (or 30624 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 378918306 is about 19465.8240513984. The cubic root of 378918306 is about 723.6277211158.

The spelling of 378918306 in words is "three hundred seventy-eight million, nine hundred eighteen thousand, three hundred six".