19238250416449 has 9 divisors (see below), whose sum is σ = 19283723302179. Its totient is φ = 19192884539400.

The previous prime is 19238250416353. The next prime is 19238250416453. The reversal of 19238250416449 is 94461405283291.

The square root of 19238250416449 is 4386143.

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., 18468875836849 + 769374579600 = 4297543^2 + 877140^2 .

It is not a de Polignac number, because 19238250416449 - 2²⁵ = 19238216862017 is a prime.

It is a super-2 number, since 2×19238250416449² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19238250416393 and 19238250416402.

It is not an unprimeable number, because it can be changed into a prime (19238250416479) 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, 1943056399 + ... + 1943066299.

Almost surely, 2^{19238250416449} is an apocalyptic number.

19238250416449 is the 4386143-rd square number.

19238250416449 is the 2193072-nd centered octagonal number.

It is an amenable number.

19238250416449 is a deficient number, since it is larger than the sum of its proper divisors (45472885730).

19238250416449 is an frugal number, since it uses more digits than its factorization.

19238250416449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20688 (or 10344 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 58.

The spelling of 19238250416449 in words is "nineteen trillion, two hundred thirty-eight billion, two hundred fifty million, four hundred sixteen thousand, four hundred forty-nine".