19440969804 has 36 divisors (see below), whose sum is σ = 49426527696. Its totient is φ = 6442862688.

The previous prime is 19440969799. The next prime is 19440969833. The reversal of 19440969804 is 40896904491.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1554544 + ... + 1566999.

Almost surely, 2^19440969804 is an apocalyptic number.

It is an amenable number.

19440969804 is an abundant number, since it is smaller than the sum of its proper divisors (29985557892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19440969804 is a wasteful number, since it uses less digits than its factorization.

19440969804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121726 (or 3121721 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 19440969804 in words is "nineteen billion, four hundred forty million, nine hundred sixty-nine thousand, eight hundred four".