19386965441 has 4 divisors (see below), whose sum is σ = 19387306752. Its totient is φ = 19386624132.

The previous prime is 19386965413. The next prime is 19386965459. The reversal of 19386965441 is 14456968391.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19386965441 - 2¹⁰ = 19386964417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19386965401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62681 + ... + 206646.

It is an arithmetic number, because the mean of its divisors is an integer number (4846826688).

Almost surely, 2^19386965441 is an apocalyptic number.

It is an amenable number.

19386965441 is a deficient number, since it is larger than the sum of its proper divisors (341311).

19386965441 is an equidigital number, since it uses as much as digits as its factorization.

19386965441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341310.

The product of its digits is 5598720, while the sum is 56.

The spelling of 19386965441 in words is "nineteen billion, three hundred eighty-six million, nine hundred sixty-five thousand, four hundred forty-one".