378428911 has 6 divisors (see below), whose sum is σ = 440213280. Its totient is φ = 324367596.

The previous prime is 378428863. The next prime is 378428951. The reversal of 378428911 is 119824873.

It is not a de Polignac number, because 378428911 - 2¹¹ = 378426863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378428951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3861471 + ... + 3861568.

It is an arithmetic number, because the mean of its divisors is an integer number (73368880).

Almost surely, 2^378428911 is an apocalyptic number.

378428911 is a deficient number, since it is larger than the sum of its proper divisors (61784369).

378428911 is an equidigital number, since it uses as much as digits as its factorization.

378428911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7723053 (or 7723046 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 378428911 is about 19453.2493686787. The cubic root of 378428911 is about 723.3160511537.

The spelling of 378428911 in words is "three hundred seventy-eight million, four hundred twenty-eight thousand, nine hundred eleven".