378226337 has 4 divisors (see below), whose sum is σ = 379849860. Its totient is φ = 376602816.

The previous prime is 378226333. The next prime is 378226339. The reversal of 378226337 is 733622873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 733622873 = 53 ⋅13841941.

It can be written as a sum of positive squares in 2 ways, for example, as 155351296 + 222875041 = 12464^2 + 14929^2 .

It is a cyclic number.

It is not a de Polignac number, because 378226337 - 2² = 378226333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378226294 and 378226303.

It is not an unprimeable number, because it can be changed into a prime (378226333) 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 3 ways as a sum of consecutive naturals, for example, 811412 + ... + 811877.

It is an arithmetic number, because the mean of its divisors is an integer number (94962465).

Almost surely, 2^378226337 is an apocalyptic number.

It is an amenable number.

378226337 is a deficient number, since it is larger than the sum of its proper divisors (1623523).

378226337 is a wasteful number, since it uses less digits than its factorization.

378226337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623522.

The product of its digits is 254016, while the sum is 41.

The square root of 378226337 is about 19448.0419837062. The cubic root of 378226337 is about 723.1869637837.

The spelling of 378226337 in words is "three hundred seventy-eight million, two hundred twenty-six thousand, three hundred thirty-seven".