1968666370 has 96 divisors (see below), whose sum is σ = 4103737344. Its totient is φ = 678142080.

The previous prime is 1968666319. The next prime is 1968666379. The reversal of 1968666370 is 736668691.

It is not an unprimeable number, because it can be changed into a prime (1968666379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3534132 + ... + 3534688.

It is an arithmetic number, because the mean of its divisors is an integer number (42747264).

Almost surely, 2^1968666370 is an apocalyptic number.

1968666370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1968666370 is an abundant number, since it is smaller than the sum of its proper divisors (2135070974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1968666370 is a wasteful number, since it uses less digits than its factorization.

1968666370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736 (or 725 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 52.

The square root of 1968666370 is about 44369.6559599012. The cubic root of 1968666370 is about 1253.3067369457.

The spelling of 1968666370 in words is "one billion, nine hundred sixty-eight million, six hundred sixty-six thousand, three hundred seventy".