19630812100 has 27 divisors (see below), whose sum is σ = 42601902861. Its totient is φ = 7851764400.

The previous prime is 19630812083. The next prime is 19630812109. The reversal of 19630812100 is 121803691.

The square root of 19630812100 is 140110.

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., 7067092356 + 12563719744 = 84066^2 + 112088^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19630812109) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1394095 + ... + 1408105.

Almost surely, 2^19630812100 is an apocalyptic number.

19630812100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19630812100 is the 140110-th square number.

It is an amenable number.

19630812100 is an abundant number, since it is smaller than the sum of its proper divisors (22971090761).

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

19630812100 is an frugal number, since it uses more digits than its factorization.

19630812100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28036 (or 14018 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 19630812100 in words is "nineteen billion, six hundred thirty million, eight hundred twelve thousand, one hundred".