19227704896 has 21 divisors (see below), whose sum is σ = 38157178321. Its totient is φ = 9613297792.

The previous prime is 19227704891. The next prime is 19227704921. The reversal of 19227704896 is 69840772291.

The square root of 19227704896 is 138664.

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., 965966400 + 18261738496 = 31080^2 + 135136^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19227704891) 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, 1100646 + ... + 1117978.

Almost surely, 2^19227704896 is an apocalyptic number.

19227704896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

19227704896 is the 138664-th square number.

It is an amenable number.

19227704896 is a deficient number, since it is larger than the sum of its proper divisors (18929473425).

19227704896 is an frugal number, since it uses more digits than its factorization.

19227704896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34678 (or 17335 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 55.

It can be divided in two parts, 1922770 and 4896, that added together give a triangular number (1927666 = T₁₉₆₃).

The spelling of 19227704896 in words is "nineteen billion, two hundred twenty-seven million, seven hundred four thousand, eight hundred ninety-six".