1968618285 has 24 divisors (see below), whose sum is σ = 3413329920. Its totient is φ = 1049604192.

The previous prime is 1968618283. The next prime is 1968618293. The reversal of 1968618285 is 5828168691.

It is a happy number.

1968618285 is a `hidden beast` number, since 19 + 6 + 8 + 618 + 2 + 8 + 5 = 666.

It is not a de Polignac number, because 1968618285 - 2¹ = 1968618283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968618283) 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 23 ways as a sum of consecutive naturals, for example, 233412 + ... + 241698.

It is an arithmetic number, because the mean of its divisors is an integer number (142222080).

Almost surely, 2^1968618285 is an apocalyptic number.

1968618285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1968618285 is a deficient number, since it is larger than the sum of its proper divisors (1444711635).

1968618285 is a wasteful number, since it uses less digits than its factorization.

1968618285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13577 (or 13574 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The square root of 1968618285 is about 44369.1140885188. The cubic root of 1968618285 is about 1253.2965327882.

The spelling of 1968618285 in words is "one billion, nine hundred sixty-eight million, six hundred eighteen thousand, two hundred eighty-five".