378937633 has 4 divisors (see below), whose sum is σ = 401228100. Its totient is φ = 356647168.

The previous prime is 378937631. The next prime is 378937649. The reversal of 378937633 is 336739873.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 228826129 + 150111504 = 15127^2 + 12252^2 .

It is a cyclic number.

It is not a de Polignac number, because 378937633 - 2¹ = 378937631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378937631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11145208 + ... + 11145241.

It is an arithmetic number, because the mean of its divisors is an integer number (100307025).

Almost surely, 2^378937633 is an apocalyptic number.

It is an amenable number.

378937633 is a deficient number, since it is larger than the sum of its proper divisors (22290467).

378937633 is a wasteful number, since it uses less digits than its factorization.

378937633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22290466.

The product of its digits is 1714608, while the sum is 49.

The square root of 378937633 is about 19466.3204792277. The cubic root of 378937633 is about 723.6400239569.

The spelling of 378937633 in words is "three hundred seventy-eight million, nine hundred thirty-seven thousand, six hundred thirty-three".