378818893 has 4 divisors (see below), whose sum is σ = 378979200. Its totient is φ = 378658588.

The previous prime is 378818887. The next prime is 378818917. The reversal of 378818893 is 398818873.

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 378818893 - 2⁵ = 378818861 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 (378818593) 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, 76555 + ... + 81352.

It is an arithmetic number, because the mean of its divisors is an integer number (94744800).

Almost surely, 2^378818893 is an apocalyptic number.

It is an amenable number.

378818893 is a deficient number, since it is larger than the sum of its proper divisors (160307).

378818893 is a wasteful number, since it uses less digits than its factorization.

378818893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160306.

The product of its digits is 2322432, while the sum is 55.

The square root of 378818893 is about 19463.2703572652. The cubic root of 378818893 is about 723.5644319286.

The spelling of 378818893 in words is "three hundred seventy-eight million, eight hundred eighteen thousand, eight hundred ninety-three".