19419427884 has 24 divisors (see below), whose sum is σ = 45431565760. Its totient is φ = 6456061584.

The previous prime is 19419427877. The next prime is 19419427889. The reversal of 19419427884 is 48872491491.

It is a super-2 number, since 2×19419427884² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19419427889) 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, 2130394 + ... + 2139489.

Almost surely, 2^19419427884 is an apocalyptic number.

It is an amenable number.

19419427884 is an abundant number, since it is smaller than the sum of its proper divisors (26012137876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19419427884 is a wasteful number, since it uses less digits than its factorization.

19419427884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270269 (or 4270267 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 57.

The spelling of 19419427884 in words is "nineteen billion, four hundred nineteen million, four hundred twenty-seven thousand, eight hundred eighty-four".