378825637 has 8 divisors (see below), whose sum is σ = 414941400. Its totient is φ = 344246784.

The previous prime is 378825599. The next prime is 378825641. The reversal of 378825637 is 736528873.

It can be written as a sum of positive squares in 4 ways, for example, as 67338436 + 311487201 = 8206^2 + 17649^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378825637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378825697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383712 + ... + 384697.

It is an arithmetic number, because the mean of its divisors is an integer number (51867675).

Almost surely, 2^378825637 is an apocalyptic number.

It is an amenable number.

378825637 is a deficient number, since it is larger than the sum of its proper divisors (36115763).

378825637 is a wasteful number, since it uses less digits than its factorization.

378825637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768455.

The product of its digits is 1693440, while the sum is 49.

The square root of 378825637 is about 19463.4436058987. The cubic root of 378825637 is about 723.5687257038.

The spelling of 378825637 in words is "three hundred seventy-eight million, eight hundred twenty-five thousand, six hundred thirty-seven".