19854780324 has 12 divisors (see below), whose sum is σ = 46327820784. Its totient is φ = 6618260104.

The previous prime is 19854780317. The next prime is 19854780353. The reversal of 19854780324 is 42308745891.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827282502 + ... + 827282525.

It is an arithmetic number, because the mean of its divisors is an integer number (3860651732).

Almost surely, 2^19854780324 is an apocalyptic number.

It is an amenable number.

19854780324 is an abundant number, since it is smaller than the sum of its proper divisors (26473040460).

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

19854780324 is a wasteful number, since it uses less digits than its factorization.

19854780324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654565034 (or 1654565032 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 19854780324 in words is "nineteen billion, eight hundred fifty-four million, seven hundred eighty thousand, three hundred twenty-four".