378564389 has 8 divisors (see below), whose sum is σ = 442706880. Its totient is φ = 316937376.

The previous prime is 378564377. The next prime is 378564391. The reversal of 378564389 is 983465873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 378564389 - 2⁸ = 378564133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 378564389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378564359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628544 + ... + 629145.

It is an arithmetic number, because the mean of its divisors is an integer number (55338360).

Almost surely, 2^378564389 is an apocalyptic number.

It is an amenable number.

378564389 is a deficient number, since it is larger than the sum of its proper divisors (64142491).

378564389 is a wasteful number, since it uses less digits than its factorization.

378564389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257739.

The product of its digits is 4354560, while the sum is 53.

The square root of 378564389 is about 19456.7312002813. The cubic root of 378564389 is about 723.4023568574.

The spelling of 378564389 in words is "three hundred seventy-eight million, five hundred sixty-four thousand, three hundred eighty-nine".