19421337983 has 8 divisors (see below), whose sum is σ = 19475238000. Its totient is φ = 19367498880.

The previous prime is 19421337973. The next prime is 19421337997. The reversal of 19421337983 is 38973312491.

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 19421337983 - 2¹⁰ = 19421336959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19421337953) 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, 664841 + ... + 693437.

It is an arithmetic number, because the mean of its divisors is an integer number (2434404750).

Almost surely, 2^19421337983 is an apocalyptic number.

19421337983 is a deficient number, since it is larger than the sum of its proper divisors (53900017).

19421337983 is a wasteful number, since it uses less digits than its factorization.

19421337983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30457.

The product of its digits is 979776, while the sum is 50.

The spelling of 19421337983 in words is "nineteen billion, four hundred twenty-one million, three hundred thirty-seven thousand, nine hundred eighty-three".