1984578968 has 16 divisors (see below), whose sum is σ = 3723271080. Its totient is φ = 991706688.

The previous prime is 1984578913. The next prime is 1984578977. The reversal of 1984578968 is 8698754891.

It is a congruent number.

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, 58205 + ... + 85772.

Almost surely, 2^1984578968 is an apocalyptic number.

It is an amenable number.

1984578968 is a deficient number, since it is larger than the sum of its proper divisors (1738692112).

1984578968 is a wasteful number, since it uses less digits than its factorization.

1984578968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145706 (or 145702 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 65.

The square root of 1984578968 is about 44548.6135362258. The cubic root of 1984578968 is about 1256.6744774879.

The spelling of 1984578968 in words is "one billion, nine hundred eighty-four million, five hundred seventy-eight thousand, nine hundred sixty-eight".