19135314118449 has 27 divisors (see below), whose sum is σ = 28894337977323. Its totient is φ = 12202036819632.

The previous prime is 19135314118423. The next prime is 19135314118477. The reversal of 19135314118449 is 94481141353191.

The square root of 19135314118449 is 4374393.

It is a perfect power (a square), and thus also a powerful number.

19135314118449 is a `hidden beast` number, since 1 + 9 + 1 + 3 + 53 + 141 + 1 + 8 + 449 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7150784069025 + 11984530049424 = 2674095^2 + 3461868^2 .

It is not a de Polignac number, because 19135314118449 - 2¹⁵ = 19135314085681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19135314118395 and 19135314118404.

It is not an unprimeable number, because it can be changed into a prime (19135414118449) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 301801419 + ... + 301864815.

Almost surely, 2^{19135314118449} is an apocalyptic number.

19135314118449 is the 4374393-rd square number.

19135314118449 is the 2187197-th centered octagonal number.

It is an amenable number.

19135314118449 is a deficient number, since it is larger than the sum of its proper divisors (9759023858874).

19135314118449 is an frugal number, since it uses more digits than its factorization.

19135314118449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126846 (or 63423 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The spelling of 19135314118449 in words is "nineteen trillion, one hundred thirty-five billion, three hundred fourteen million, one hundred eighteen thousand, four hundred forty-nine".