378643243 has 12 divisors (see below), whose sum is σ = 420328944. Its totient is φ = 340802000.

The previous prime is 378643231. The next prime is 378643247. The reversal of 378643243 is 342346873.

It is not a de Polignac number, because 378643243 - 2⁹ = 378642731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378643196 and 378643205.

It is not an unprimeable number, because it can be changed into a prime (378643247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3271 + ... + 27712.

It is an arithmetic number, because the mean of its divisors is an integer number (35027412).

Almost surely, 2^378643243 is an apocalyptic number.

378643243 is a deficient number, since it is larger than the sum of its proper divisors (41685701).

378643243 is a wasteful number, since it uses less digits than its factorization.

378643243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31106 (or 31095 counting only the distinct ones).

The product of its digits is 290304, while the sum is 40.

The square root of 378643243 is about 19458.7574885962. The cubic root of 378643243 is about 723.4525809945.

The spelling of 378643243 in words is "three hundred seventy-eight million, six hundred forty-three thousand, two hundred forty-three".