1378229812 has 12 divisors (see below), whose sum is σ = 2433247236. Its totient is φ = 683016320.

The previous prime is 1378229803. The next prime is 1378229821. The reversal of 1378229812 is 2189228731.

It is an interprime number because it is at equal distance from previous prime (1378229803) and next prime (1378229821).

It can be written as a sum of positive squares in 2 ways, for example, as 10265616 + 1367964196 = 3204^2 + 36986^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1524139 + ... + 1525042.

It is an arithmetic number, because the mean of its divisors is an integer number (202770603).

Almost surely, 2^1378229812 is an apocalyptic number.

It is an amenable number.

1378229812 is a deficient number, since it is larger than the sum of its proper divisors (1055017424).

1378229812 is a wasteful number, since it uses less digits than its factorization.

1378229812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049298 (or 3049296 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 1378229812 is about 37124.5176669004. The cubic root of 1378229812 is about 1112.8600356730.

The spelling of 1378229812 in words is "one billion, three hundred seventy-eight million, two hundred twenty-nine thousand, eight hundred twelve".