378805353 has 4 divisors (see below), whose sum is σ = 505073808. Its totient is φ = 252536900.

The previous prime is 378805321. The next prime is 378805387. The reversal of 378805353 is 353508873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 378805353 - 2⁵ = 378805321 is a prime.

It is a super-2 number, since 2×378805353² = 286986990922909218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (378806353) 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, 63134223 + ... + 63134228.

It is an arithmetic number, because the mean of its divisors is an integer number (126268452).

Almost surely, 2^378805353 is an apocalyptic number.

It is an amenable number.

378805353 is a deficient number, since it is larger than the sum of its proper divisors (126268455).

378805353 is a wasteful number, since it uses less digits than its factorization.

378805353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126268454.

The product of its (nonzero) digits is 302400, while the sum is 42.

The square root of 378805353 is about 19462.9225194985. The cubic root of 378805353 is about 723.5558111168. Note that the first 3 decimals are identical.

The spelling of 378805353 in words is "three hundred seventy-eight million, eight hundred five thousand, three hundred fifty-three".