378574849 has 3 divisors (see below), whose sum is σ = 378594307. Its totient is φ = 378555392.

The previous prime is 378574843. The next prime is 378574891. The reversal of 378574849 is 948475873.

The square root of 378574849 is 19457.

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: 948475873 = 787 ⋅1205179.

It can be written as a sum of positive squares in only one way, i.e., 307476225 + 71098624 = 17535^2 + 8432^2 .

It is not a de Polignac number, because 378574849 - 2³ = 378574841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 378574849.

It is not an unprimeable number, because it can be changed into a prime (378574841) 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, 9729 + ... + 29185.

Almost surely, 2^378574849 is an apocalyptic number.

378574849 is the 19457-th square number.

378574849 is the 9729-th centered octagonal number.

It is an amenable number.

378574849 is a deficient number, since it is larger than the sum of its proper divisors (19458).

378574849 is an frugal number, since it uses more digits than its factorization.

378574849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38914 (or 19457 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 55.

The cubic root of 378574849 is about 723.4090195012.

The spelling of 378574849 in words is "three hundred seventy-eight million, five hundred seventy-four thousand, eight hundred forty-nine".