19443021113 has 8 divisors (see below), whose sum is σ = 19465272000. Its totient is φ = 19420786768.

The previous prime is 19443021071. The next prime is 19443021121. The reversal of 19443021113 is 31112034491.

It is a happy number.

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 19443021113 - 2¹⁰ = 19443020089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19443021133) 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, 5501495 + ... + 5505027.

It is an arithmetic number, because the mean of its divisors is an integer number (2433159000).

Almost surely, 2^19443021113 is an apocalyptic number.

It is an amenable number.

19443021113 is a deficient number, since it is larger than the sum of its proper divisors (22250887).

19443021113 is a wasteful number, since it uses less digits than its factorization.

19443021113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8271.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 19443021113 in words is "nineteen billion, four hundred forty-three million, twenty-one thousand, one hundred thirteen".