19421144484 has 48 divisors (see below), whose sum is σ = 51805114368. Its totient is φ = 5547248928.

The previous prime is 19421144417. The next prime is 19421144507. The reversal of 19421144484 is 48444112491.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265357 + ... + 330539.

It is an arithmetic number, because the mean of its divisors is an integer number (1079273216).

Almost surely, 2^19421144484 is an apocalyptic number.

19421144484 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19421144484 is an abundant number, since it is smaller than the sum of its proper divisors (32383969884).

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

19421144484 is a wasteful number, since it uses less digits than its factorization.

19421144484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68744 (or 68742 counting only the distinct ones).

The product of its digits is 147456, while the sum is 42.

The spelling of 19421144484 in words is "nineteen billion, four hundred twenty-one million, one hundred forty-four thousand, four hundred eighty-four".