19045104016 has 15 divisors (see below), whose sum is σ = 36900958593. Its totient is φ = 9522276000.

The previous prime is 19045103999. The next prime is 19045104019. The reversal of 19045104016 is 61040154091.

The square root of 19045104016 is 138004.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 10858473616 + 8186630400 = 104204^2 + 90480^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19045104019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 534766 + ... + 569266.

Almost surely, 2^19045104016 is an apocalyptic number.

19045104016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

19045104016 is the 138004-th square number.

It is an amenable number.

19045104016 is a deficient number, since it is larger than the sum of its proper divisors (17855854577).

19045104016 is an frugal number, since it uses more digits than its factorization.

19045104016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69010 (or 34503 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 19045104016 in words is "nineteen billion, forty-five million, one hundred four thousand, sixteen".