378261577 has 8 divisors (see below), whose sum is σ = 401672736. Its totient is φ = 354979392.

The previous prime is 378261571. The next prime is 378261581. The reversal of 378261577 is 775162873.

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

It is a cyclic number.

It is not a de Polignac number, because 378261577 - 2¹⁹ = 377737289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378261571) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 26163 + ... + 37960.

It is an arithmetic number, because the mean of its divisors is an integer number (50209092).

Almost surely, 2^378261577 is an apocalyptic number.

It is an amenable number.

378261577 is a deficient number, since it is larger than the sum of its proper divisors (23411159).

378261577 is a wasteful number, since it uses less digits than its factorization.

378261577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64487.

The product of its digits is 493920, while the sum is 46.

The square root of 378261577 is about 19448.9479664068. The cubic root of 378261577 is about 723.2094232783.

The spelling of 378261577 in words is "three hundred seventy-eight million, two hundred sixty-one thousand, five hundred seventy-seven".