378320964 has 36 divisors (see below), whose sum is σ = 1026872784. Its totient is φ = 108091536.

The previous prime is 378320959. The next prime is 378320977. The reversal of 378320964 is 469023873.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321114 + ... + 322289.

It is an arithmetic number, because the mean of its divisors is an integer number (28524244).

Almost surely, 2^378320964 is an apocalyptic number.

It is an amenable number.

378320964 is an abundant number, since it is smaller than the sum of its proper divisors (648551820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

378320964 is a wasteful number, since it uses less digits than its factorization.

378320964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643424 (or 643415 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 378320964 is about 19450.4746471648. The cubic root of 378320964 is about 723.2472692145.

The spelling of 378320964 in words is "three hundred seventy-eight million, three hundred twenty thousand, nine hundred sixty-four".