378545873 has 4 divisors (see below), whose sum is σ = 398469360. Its totient is φ = 358622388.

The previous prime is 378545863. The next prime is 378545887.

It is a happy number.

378545873 is nontrivially palindromic in base 10.

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 378545873 - 2⁴ = 378545857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378545803) 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, 9961715 + ... + 9961752.

It is an arithmetic number, because the mean of its divisors is an integer number (99617340).

Almost surely, 2^378545873 is an apocalyptic number.

It is an amenable number.

378545873 is a deficient number, since it is larger than the sum of its proper divisors (19923487).

378545873 is a wasteful number, since it uses less digits than its factorization.

378545873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19923486.

The product of its digits is 2822400, while the sum is 50.

The square root of 378545873 is about 19456.2553694178. The cubic root of 378545873 is about 723.3905625306.

The spelling of 378545873 in words is "three hundred seventy-eight million, five hundred forty-five thousand, eight hundred seventy-three".