19098900427 has 8 divisors (see below), whose sum is σ = 20231164800. Its totient is φ = 17967613824.

The previous prime is 19098900421. The next prime is 19098900449. The reversal of 19098900427 is 72400989091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19098900427 - 2³ = 19098900419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19098900421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204027 + ... + 282532.

It is an arithmetic number, because the mean of its divisors is an integer number (2528895600).

Almost surely, 2^19098900427 is an apocalyptic number.

19098900427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

19098900427 is a deficient number, since it is larger than the sum of its proper divisors (1132264373).

19098900427 is a wasteful number, since it uses less digits than its factorization.

19098900427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488885.

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 19098900427 in words is "nineteen billion, ninety-eight million, nine hundred thousand, four hundred twenty-seven".