1228630219 has 16 divisors (see below), whose sum is σ = 1274963040. Its totient is φ = 1183311360.

The previous prime is 1228630217. The next prime is 1228630253. The reversal of 1228630219 is 9120368221.

It is a cyclic number.

It is not a de Polignac number, because 1228630219 - 2¹ = 1228630217 is a prime.

It is a super-2 number, since 2×1228630219² = 3019064430079975922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1228630213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1212357 + ... + 1213369.

It is an arithmetic number, because the mean of its divisors is an integer number (79685190).

Almost surely, 2^1228630219 is an apocalyptic number.

1228630219 is a deficient number, since it is larger than the sum of its proper divisors (46332821).

1228630219 is a wasteful number, since it uses less digits than its factorization.

1228630219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1228630219 is about 35051.8219069994. The cubic root of 1228630219 is about 1071.0433875661.

The spelling of 1228630219 in words is "one billion, two hundred twenty-eight million, six hundred thirty thousand, two hundred nineteen".