19213213884 has 24 divisors (see below), whose sum is σ = 47467940688. Its totient is φ = 6027674880.

The previous prime is 19213213849. The next prime is 19213213889. The reversal of 19213213884 is 48831231291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19213213889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47091007 + ... + 47091414.

It is an arithmetic number, because the mean of its divisors is an integer number (1977830862).

Almost surely, 2^19213213884 is an apocalyptic number.

It is an amenable number.

19213213884 is an abundant number, since it is smaller than the sum of its proper divisors (28254726804).

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

19213213884 is a wasteful number, since it uses less digits than its factorization.

19213213884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94182445 (or 94182443 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The spelling of 19213213884 in words is "nineteen billion, two hundred thirteen million, two hundred thirteen thousand, eight hundred eighty-four".