378158843 has 4 divisors (see below), whose sum is σ = 398061960. Its totient is φ = 358255728.

The previous prime is 378158831. The next prime is 378158849. The reversal of 378158843 is 348851873.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 378158843 - 2⁴ = 378158827 is a prime.

It is a super-2 number, since 2×378158843² = 286008221078197298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378158849) 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, 9951530 + ... + 9951567.

It is an arithmetic number, because the mean of its divisors is an integer number (99515490).

Almost surely, 2^378158843 is an apocalyptic number.

378158843 is a deficient number, since it is larger than the sum of its proper divisors (19903117).

378158843 is a wasteful number, since it uses less digits than its factorization.

378158843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19903116.

The product of its digits is 645120, while the sum is 47.

The square root of 378158843 is about 19446.3066673340. The cubic root of 378158843 is about 723.1439439656.

The spelling of 378158843 in words is "three hundred seventy-eight million, one hundred fifty-eight thousand, eight hundred forty-three".