378676544689 has 3 divisors (see below), whose sum is σ = 378677160057. Its totient is φ = 378675929322.

The previous prime is 378676544651. The next prime is 378676544707. The reversal of 378676544689 is 986445676873.

The square root of 378676544689 is 615367.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 986445676873 = 2099 ⋅469959827.

It is not a de Polignac number, because 378676544689 - 2¹⁵ = 378676511921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378676548689) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 307684 + ... + 923050.

It is an arithmetic number, because the mean of its divisors is an integer number (126225720019).

Almost surely, 2^378676544689 is an apocalyptic number.

378676544689 is the 615367-th square number.

378676544689 is the 307684-th centered octagonal number.

It is an amenable number.

378676544689 is a deficient number, since it is larger than the sum of its proper divisors (615368).

378676544689 is an frugal number, since it uses more digits than its factorization.

378676544689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230734 (or 615367 counting only the distinct ones).

The product of its digits is 1463132160, while the sum is 73.

The spelling of 378676544689 in words is "three hundred seventy-eight billion, six hundred seventy-six million, five hundred forty-four thousand, six hundred eighty-nine".