1968170553 has 12 divisors (see below), whose sum is σ = 2852177328. Its totient is φ = 1307837880.

The previous prime is 1968170549. The next prime is 1968170569. The reversal of 1968170553 is 3550718691.

It is a happy number.

1968170553 is a `hidden beast` number, since 1 + 96 + 8 + 1 + 7 + 0 + 553 = 666.

It is not a de Polignac number, because 1968170553 - 2² = 1968170549 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1968170499 and 1968170508.

It is not an unprimeable number, because it can be changed into a prime (1968170573) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 353403 + ... + 358928.

It is an arithmetic number, because the mean of its divisors is an integer number (237681444).

Almost surely, 2^1968170553 is an apocalyptic number.

It is an amenable number.

1968170553 is a deficient number, since it is larger than the sum of its proper divisors (884006775).

1968170553 is a wasteful number, since it uses less digits than its factorization.

1968170553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712644 (or 712641 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 1968170553 is about 44364.0682647568. The cubic root of 1968170553 is about 1253.2015112336.

The spelling of 1968170553 in words is "one billion, nine hundred sixty-eight million, one hundred seventy thousand, five hundred fifty-three".