19016961604 has 45 divisors (see below), whose sum is σ = 35313421871. Its totient is φ = 8960871960.

The previous prime is 19016961589. The next prime is 19016961629. The reversal of 19016961604 is 40616961091.

The square root of 19016961604 is 137902.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 99565149 + ... + 99565339.

Almost surely, 2^19016961604 is an apocalyptic number.

19016961604 is the 137902-nd square number.

It is an amenable number.

19016961604 is a deficient number, since it is larger than the sum of its proper divisors (16296460267).

19016961604 is an frugal number, since it uses more digits than its factorization.

19016961604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 19016961604 in words is "nineteen billion, sixteen million, nine hundred sixty-one thousand, six hundred four".