378612905 has 16 divisors (see below), whose sum is σ = 521726400. Its totient is φ = 260861760.

The previous prime is 378612887. The next prime is 378612911. The reversal of 378612905 is 509216873.

It is not a de Polignac number, because 378612905 - 2⁶ = 378612841 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180110 + ... + 182199.

It is an arithmetic number, because the mean of its divisors is an integer number (32607900).

Almost surely, 2^378612905 is an apocalyptic number.

It is an amenable number.

378612905 is a deficient number, since it is larger than the sum of its proper divisors (143113495).

378612905 is a wasteful number, since it uses less digits than its factorization.

378612905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362344.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 378612905 is about 19457.9779268042. The cubic root of 378612905 is about 723.4332587688.

The spelling of 378612905 in words is "three hundred seventy-eight million, six hundred twelve thousand, nine hundred five".