19113201 has 12 divisors (see below), whose sum is σ = 28354612. Its totient is φ = 12397536.

The previous prime is 19113187. The next prime is 19113203. The reversal of 19113201 is 10231191.

It can be written as a sum of positive squares in 2 ways, for example, as 8381025 + 10732176 = 2895^2 + 3276^2 .

It is not a de Polignac number, because 19113201 - 2⁵ = 19113169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19113203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28366 + ... + 29031.

Almost surely, 2^19113201 is an apocalyptic number.

It is an amenable number.

19113201 is a deficient number, since it is larger than the sum of its proper divisors (9241411).

19113201 is a wasteful number, since it uses less digits than its factorization.

19113201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57440 (or 57437 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 19113201 is about 4371.8647051344. The cubic root of 19113201 is about 267.3690557767.

Adding to 19113201 its reverse (10231191), we get a palindrome (29344392).

The spelling of 19113201 in words is "nineteen million, one hundred thirteen thousand, two hundred one".