19126336804 has 9 divisors (see below), whose sum is σ = 33471573457. Its totient is φ = 9563030104.

The previous prime is 19126336793. The next prime is 19126336837. The reversal of 19126336804 is 40863362191.

The square root of 19126336804 is 138298.

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., 6823090404 + 12303246400 = 82602^2 + 110920^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 242022 + ... + 311170.

Almost surely, 2^19126336804 is an apocalyptic number.

19126336804 is the 138298-th square number.

It is an amenable number.

19126336804 is a deficient number, since it is larger than the sum of its proper divisors (14345236653).

19126336804 is an frugal number, since it uses more digits than its factorization.

19126336804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138302 (or 69151 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

Adding to 19126336804 its reverse (40863362191), we get a palindrome (59989698995).

The spelling of 19126336804 in words is "nineteen billion, one hundred twenty-six million, three hundred thirty-six thousand, eight hundred four".