378228794 has 4 divisors (see below), whose sum is σ = 567343194. Its totient is φ = 189114396.

The previous prime is 378228793. The next prime is 378228797. The reversal of 378228794 is 497822873.

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

It can be written as a sum of positive squares in only one way, i.e., 365001025 + 13227769 = 19105^2 + 3637^2 .

It is a super-2 number, since 2×378228794² = 286114041221388872, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (378228793) 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 as a sum of consecutive naturals, namely, 94557197 + ... + 94557200.

Almost surely, 2^378228794 is an apocalyptic number.

378228794 is a deficient number, since it is larger than the sum of its proper divisors (189114400).

378228794 is a wasteful number, since it uses less digits than its factorization.

378228794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189114399.

The product of its digits is 1354752, while the sum is 50.

The square root of 378228794 is about 19448.1051519165. The cubic root of 378228794 is about 723.1885297477.

The spelling of 378228794 in words is "three hundred seventy-eight million, two hundred twenty-eight thousand, seven hundred ninety-four".