19329021841 has 4 divisors (see below), whose sum is σ = 20346338800. Its totient is φ = 18311704884.

The previous prime is 19329021799. The next prime is 19329021923. The reversal of 19329021841 is 14812092391.

It is a happy number.

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 19329021841 - 2¹¹ = 19329019793 is a prime.

It is a super-2 number, since 2×19329021841² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19329021794 and 19329021803.

It is not an unprimeable number, because it can be changed into a prime (19329021941) 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, 508658451 + ... + 508658488.

It is an arithmetic number, because the mean of its divisors is an integer number (5086584700).

Almost surely, 2^19329021841 is an apocalyptic number.

It is an amenable number.

19329021841 is a deficient number, since it is larger than the sum of its proper divisors (1017316959).

19329021841 is a wasteful number, since it uses less digits than its factorization.

19329021841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017316958.

The product of its (nonzero) digits is 31104, while the sum is 40.

The spelling of 19329021841 in words is "nineteen billion, three hundred twenty-nine million, twenty-one thousand, eight hundred forty-one".