19433579049 has 20 divisors (see below), whose sum is σ = 29222680960. Its totient is φ = 12869911800.

The previous prime is 19433579041. The next prime is 19433579063. The reversal of 19433579049 is 94097533491.

It is a happy number.

It is not a de Polignac number, because 19433579049 - 2³ = 19433579041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19433578986 and 19433579004.

It is not an unprimeable number, because it can be changed into a prime (19433579041) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 782209 + ... + 806670.

It is an arithmetic number, because the mean of its divisors is an integer number (1461134048).

Almost surely, 2^19433579049 is an apocalyptic number.

It is an amenable number.

19433579049 is a deficient number, since it is larger than the sum of its proper divisors (9789101911).

19433579049 is a wasteful number, since it uses less digits than its factorization.

19433579049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589042 (or 1589033 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 54.

The spelling of 19433579049 in words is "nineteen billion, four hundred thirty-three million, five hundred seventy-nine thousand, forty-nine".