19074648321 has 27 divisors (see below), whose sum is σ = 29090717409. Its totient is φ = 12042174312.

The previous prime is 19074648277. The next prime is 19074648331. The reversal of 19074648321 is 12384647091.

The square root of 19074648321 is 138111.

It is a perfect power (a square), and thus also a powerful number.

19074648321 is a `hidden beast` number, since 1 + 90 + 7 + 464 + 83 + 21 = 666.

It is not a de Polignac number, because 19074648321 - 2¹¹ = 19074646273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19074648331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7871116 + ... + 7873538.

Almost surely, 2^19074648321 is an apocalyptic number.

19074648321 is the 138111-st square number.

19074648321 is the 69056-th centered octagonal number.

It is an amenable number.

19074648321 is a deficient number, since it is larger than the sum of its proper divisors (10016069088).

19074648321 is an frugal number, since it uses more digits than its factorization.

19074648321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4890 (or 2445 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 19074648321 in words is "nineteen billion, seventy-four million, six hundred forty-eight thousand, three hundred twenty-one".