1378196378 has 8 divisors (see below), whose sum is σ = 2226317268. Its totient is φ = 636090624.

The previous prime is 1378196371. The next prime is 1378196381. The reversal of 1378196378 is 8736918731.

It can be written as a sum of positive squares in 2 ways, for example, as 1152806209 + 225390169 = 33953^2 + 15013^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1378196371) 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, 26503751 + ... + 26503802.

Almost surely, 2^1378196378 is an apocalyptic number.

1378196378 is a deficient number, since it is larger than the sum of its proper divisors (848120890).

1378196378 is a wasteful number, since it uses less digits than its factorization.

1378196378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53007568.

The product of its digits is 1524096, while the sum is 53.

The square root of 1378196378 is about 37124.0673687569. The cubic root of 1378196378 is about 1112.8510367714.

The spelling of 1378196378 in words is "one billion, three hundred seventy-eight million, one hundred ninety-six thousand, three hundred seventy-eight".