1968121376 has 24 divisors (see below), whose sum is σ = 4172796684. Its totient is φ = 908363520.

The previous prime is 1968121333. The next prime is 1968121387. The reversal of 1968121376 is 6731218691.

It can be written as a sum of positive squares in 2 ways, for example, as 1907592976 + 60528400 = 43676^2 + 7780^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2365115 + ... + 2365946.

Almost surely, 2^1968121376 is an apocalyptic number.

1968121376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1968121376 is an abundant number, since it is smaller than the sum of its proper divisors (2204675308).

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

1968121376 is a wasteful number, since it uses less digits than its factorization.

1968121376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4731084 (or 4731076 counting only the distinct ones).

The product of its digits is 108864, while the sum is 44.

The square root of 1968121376 is about 44363.5140177151. The cubic root of 1968121376 is about 1253.1910735873.

The spelling of 1968121376 in words is "one billion, nine hundred sixty-eight million, one hundred twenty-one thousand, three hundred seventy-six".