378964811 has 4 divisors (see below), whose sum is σ = 379631400. Its totient is φ = 378298224.

The previous prime is 378964777. The next prime is 378964829. The reversal of 378964811 is 118469873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118469873 = 2549 ⋅46477.

It is a cyclic number.

It is not a de Polignac number, because 378964811 - 2¹⁰ = 378963787 is a prime.

It is a super-3 number, since 3×378964811³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378964511) 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, 332441 + ... + 333578.

It is an arithmetic number, because the mean of its divisors is an integer number (94907850).

Almost surely, 2^378964811 is an apocalyptic number.

378964811 is a deficient number, since it is larger than the sum of its proper divisors (666589).

378964811 is an equidigital number, since it uses as much as digits as its factorization.

378964811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666588.

The product of its digits is 290304, while the sum is 47.

The square root of 378964811 is about 19467.0185441942. The cubic root of 378964811 is about 723.6573237416.

The spelling of 378964811 in words is "three hundred seventy-eight million, nine hundred sixty-four thousand, eight hundred eleven".