378833755 has 4 divisors (see below), whose sum is σ = 454600512. Its totient is φ = 303067000.

The previous prime is 378833753. The next prime is 378833779. The reversal of 378833755 is 557338873.

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

It is not a de Polignac number, because 378833755 - 2¹ = 378833753 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378833699 and 378833708.

It is not an unprimeable number, because it can be changed into a prime (378833753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37883371 + ... + 37883380.

It is an arithmetic number, because the mean of its divisors is an integer number (113650128).

Almost surely, 2^378833755 is an apocalyptic number.

378833755 is a deficient number, since it is larger than the sum of its proper divisors (75766757).

378833755 is an equidigital number, since it uses as much as digits as its factorization.

378833755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75766756.

The product of its digits is 2116800, while the sum is 49.

The square root of 378833755 is about 19463.6521495838. The cubic root of 378833755 is about 723.5738942109.

The spelling of 378833755 in words is "three hundred seventy-eight million, eight hundred thirty-three thousand, seven hundred fifty-five".