19316830225 has 135 divisors (see below), whose sum is σ = 32328348171. Its totient is φ = 11407888800.

The previous prime is 19316830207. The next prime is 19316830237. The reversal of 19316830225 is 52203861391.

The square root of 19316830225 is 138985.

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., 6954058881 + 12362771344 = 83391^2 + 111188^2 .

It is not a de Polignac number, because 19316830225 - 2⁷ = 19316830097 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 1016675266 + ... + 1016675284.

Almost surely, 2^19316830225 is an apocalyptic number.

19316830225 is the 138985-th square number.

19316830225 is the 69493-rd centered octagonal number.

It is an amenable number.

19316830225 is a deficient number, since it is larger than the sum of its proper divisors (13011517946).

19316830225 is an frugal number, since it uses more digits than its factorization.

19316830225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 19316830225 in words is "nineteen billion, three hundred sixteen million, eight hundred thirty thousand, two hundred twenty-five".