19441248136 has 8 divisors (see below), whose sum is σ = 36452340270. Its totient is φ = 9720624064.

The previous prime is 19441248067. The next prime is 19441248163. The reversal of 19441248136 is 63184214491.

It can be written as a sum of positive squares in only one way, i.e., 14039880100 + 5401368036 = 118490^2 + 73494^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 19441248092 and 19441248101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1215078001 + ... + 1215078016.

Almost surely, 2^19441248136 is an apocalyptic number.

It is an amenable number.

19441248136 is a deficient number, since it is larger than the sum of its proper divisors (17011092134).

19441248136 is a wasteful number, since it uses less digits than its factorization.

19441248136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2430156023 (or 2430156019 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The spelling of 19441248136 in words is "nineteen billion, four hundred forty-one million, two hundred forty-eight thousand, one hundred thirty-six".