378256155 has 8 divisors (see below), whose sum is σ = 605209872. Its totient is φ = 201736608.

The previous prime is 378256147. The next prime is 378256157. The reversal of 378256155 is 551652873.

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

It is not a de Polignac number, because 378256155 - 2³ = 378256147 is a prime.

It is a super-3 number, since 3×378256155³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (378256157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12608524 + ... + 12608553.

It is an arithmetic number, because the mean of its divisors is an integer number (75651234).

Almost surely, 2^378256155 is an apocalyptic number.

378256155 is a deficient number, since it is larger than the sum of its proper divisors (226953717).

378256155 is a wasteful number, since it uses less digits than its factorization.

378256155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25217085.

The product of its digits is 252000, while the sum is 42.

The square root of 378256155 is about 19448.8085753344. The cubic root of 378256155 is about 723.2059677681.

The spelling of 378256155 in words is "three hundred seventy-eight million, two hundred fifty-six thousand, one hundred fifty-five".