19204708228 has 6 divisors (see below), whose sum is σ = 33608239406. Its totient is φ = 9602354112.

The previous prime is 19204708219. The next prime is 19204708247. The reversal of 19204708228 is 82280740291.

It can be written as a sum of positive squares in only one way, i.e., 19201090624 + 3617604 = 138568^2 + 1902^2 .

It is a super-2 number, since 2×19204708228² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2400588525 + ... + 2400588532.

Almost surely, 2^19204708228 is an apocalyptic number.

It is an amenable number.

19204708228 is a deficient number, since it is larger than the sum of its proper divisors (14403531178).

19204708228 is a wasteful number, since it uses less digits than its factorization.

19204708228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4801177061 (or 4801177059 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 19204708228 in words is "nineteen billion, two hundred four million, seven hundred eight thousand, two hundred twenty-eight".