378888915 has 32 divisors (see below), whose sum is σ = 630515520. Its totient is φ = 194052096.

The previous prime is 378888901. The next prime is 378888943. The reversal of 378888915 is 519888873.

It is not a de Polignac number, because 378888915 - 2⁵ = 378888883 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81699 + ... + 86211.

It is an arithmetic number, because the mean of its divisors is an integer number (19703610).

Almost surely, 2^378888915 is an apocalyptic number.

378888915 is a deficient number, since it is larger than the sum of its proper divisors (251626605).

378888915 is a wasteful number, since it uses less digits than its factorization.

378888915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4743.

The product of its digits is 3870720, while the sum is 57.

The square root of 378888915 is about 19465.0690982591. The cubic root of 378888915 is about 723.6090111089.

The spelling of 378888915 in words is "three hundred seventy-eight million, eight hundred eighty-eight thousand, nine hundred fifteen".