1378216232 has 8 divisors (see below), whose sum is σ = 2584155450. Its totient is φ = 689108112.

The previous prime is 1378216207. The next prime is 1378216241. The reversal of 1378216232 is 2326128731.

It can be written as a sum of positive squares in only one way, i.e., 1327436356 + 50779876 = 36434^2 + 7126^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1378216192 and 1378216201.

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 as a sum of consecutive naturals, namely, 86138507 + ... + 86138522.

Almost surely, 2^1378216232 is an apocalyptic number.

It is an amenable number.

1378216232 is a deficient number, since it is larger than the sum of its proper divisors (1205939218).

1378216232 is a wasteful number, since it uses less digits than its factorization.

1378216232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172277035 (or 172277031 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 1378216232 is about 37124.3347684507. The cubic root of 1378216232 is about 1112.8563805765.

The spelling of 1378216232 in words is "one billion, three hundred seventy-eight million, two hundred sixteen thousand, two hundred thirty-two".