378643047 has 16 divisors (see below), whose sum is σ = 507967200. Its totient is φ = 250880000.

The previous prime is 378643009. The next prime is 378643049. The reversal of 378643047 is 740346873.

It is a cyclic number.

It is not a de Polignac number, because 378643047 - 2⁸ = 378642791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378643049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539797 + ... + 540497.

It is an arithmetic number, because the mean of its divisors is an integer number (31747950).

Almost surely, 2^378643047 is an apocalyptic number.

378643047 is a deficient number, since it is larger than the sum of its proper divisors (129324153).

378643047 is a wasteful number, since it uses less digits than its factorization.

378643047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554.

The product of its (nonzero) digits is 338688, while the sum is 42.

The square root of 378643047 is about 19458.7524523028. The cubic root of 378643047 is about 723.4524561657.

The spelling of 378643047 in words is "three hundred seventy-eight million, six hundred forty-three thousand, forty-seven".