19478488019 has 8 divisors (see below), whose sum is σ = 19750091472. Its totient is φ = 19207013760.

The previous prime is 19478487997. The next prime is 19478488033. The reversal of 19478488019 is 91088487491.

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 19478488019 - 2²⁴ = 19461710803 is a prime.

It is a super-2 number, since 2×19478488019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19478488069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294152 + ... + 354234.

It is an arithmetic number, because the mean of its divisors is an integer number (2468761434).

Almost surely, 2^19478488019 is an apocalyptic number.

19478488019 is a deficient number, since it is larger than the sum of its proper divisors (271603453).

19478488019 is an equidigital number, since it uses as much as digits as its factorization.

19478488019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64597.

The product of its (nonzero) digits is 4644864, while the sum is 59.

The spelling of 19478488019 in words is "nineteen billion, four hundred seventy-eight million, four hundred eighty-eight thousand, nineteen".