378494855 has 4 divisors (see below), whose sum is σ = 454193832. Its totient is φ = 302795880.

The previous prime is 378494849. The next prime is 378494881. The reversal of 378494855 is 558494873.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 378494855 - 2⁶ = 378494791 is a prime.

It is a super-2 number, since 2×378494855² = 286516710522942050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378494797 and 378494806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37849481 + ... + 37849490.

It is an arithmetic number, because the mean of its divisors is an integer number (113548458).

Almost surely, 2^378494855 is an apocalyptic number.

378494855 is a deficient number, since it is larger than the sum of its proper divisors (75698977).

378494855 is an equidigital number, since it uses as much as digits as its factorization.

378494855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75698976.

The product of its digits is 4838400, while the sum is 53.

The square root of 378494855 is about 19454.9442301951. The cubic root of 378494855 is about 723.3580630807.

The spelling of 378494855 in words is "three hundred seventy-eight million, four hundred ninety-four thousand, eight hundred fifty-five".