19814503696 has 45 divisors (see below), whose sum is σ = 41586249861. Its totient is φ = 9141777216.

The previous prime is 19814503691. The next prime is 19814503727. The reversal of 19814503696 is 69630541891.

The square root of 19814503696 is 140764.

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., 2931139600 + 16883364096 = 54140^2 + 129936^2 .

It is a super-3 number, since 3×19814503696³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (19814503691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7318375 + ... + 7321081.

Almost surely, 2^19814503696 is an apocalyptic number.

19814503696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

19814503696 is the 140764-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19814503696

19814503696 is an abundant number, since it is smaller than the sum of its proper divisors (21771746165).

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

19814503696 is an frugal number, since it uses more digits than its factorization.

19814503696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5448 (or 2722 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 52.

The spelling of 19814503696 in words is "nineteen billion, eight hundred fourteen million, five hundred three thousand, six hundred ninety-six".