378133645 has 8 divisors (see below), whose sum is σ = 458438904. Its totient is φ = 299387904.

The previous prime is 378133633. The next prime is 378133661. The reversal of 378133645 is 546331873.

It can be written as a sum of positive squares in 4 ways, for example, as 41447844 + 336685801 = 6438^2 + 18349^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378133645 is a prime.

It is a super-3 number, since 3×378133645³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378133598 and 378133607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389344 + ... + 390313.

It is an arithmetic number, because the mean of its divisors is an integer number (57304863).

Almost surely, 2^378133645 is an apocalyptic number.

It is an amenable number.

378133645 is a deficient number, since it is larger than the sum of its proper divisors (80305259).

378133645 is an equidigital number, since it uses as much as digits as its factorization.

378133645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779759.

The product of its digits is 181440, while the sum is 40.

The square root of 378133645 is about 19445.6587700186. The cubic root of 378133645 is about 723.1278817683.

The spelling of 378133645 in words is "three hundred seventy-eight million, one hundred thirty-three thousand, six hundred forty-five".