19430919044 has 12 divisors (see below), whose sum is σ = 34020231168. Its totient is φ = 9710853000.

The previous prime is 19430919043. The next prime is 19430919091. The reversal of 19430919044 is 44091903491.

It is a happy number.

It is a super-2 number, since 2×19430919044² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19430918986 and 19430919004.

It is not an unprimeable number, because it can be changed into a prime (19430919043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1142132 + ... + 1159019.

It is an arithmetic number, because the mean of its divisors is an integer number (2835019264).

Almost surely, 2^19430919044 is an apocalyptic number.

It is an amenable number.

19430919044 is a deficient number, since it is larger than the sum of its proper divisors (14589312124).

19430919044 is a wasteful number, since it uses less digits than its factorization.

19430919044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2303266 (or 2303264 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 19430919044 in words is "nineteen billion, four hundred thirty million, nine hundred nineteen thousand, forty-four".