1378222228 has 12 divisors (see below), whose sum is σ = 2538830560. Its totient is φ = 652842072.

The previous prime is 1378222217. The next prime is 1378222231. The reversal of 1378222228 is 8222228731.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9067176 + ... + 9067327.

Almost surely, 2^1378222228 is an apocalyptic number.

It is an amenable number.

1378222228 is a deficient number, since it is larger than the sum of its proper divisors (1160608332).

1378222228 is a wasteful number, since it uses less digits than its factorization.

1378222228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18134526 (or 18134524 counting only the distinct ones).

The product of its digits is 43008, while the sum is 37.

The square root of 1378222228 is about 37124.4155240187. The cubic root of 1378222228 is about 1112.8579944203.

The spelling of 1378222228 in words is "one billion, three hundred seventy-eight million, two hundred twenty-two thousand, two hundred twenty-eight".