1984681825 has 48 divisors (see below), whose sum is σ = 2876958720. Its totient is φ = 1330056000.

The previous prime is 1984681823. The next prime is 1984681843. The reversal of 1984681825 is 5281864891.

It is a happy number.

It is not a de Polignac number, because 1984681825 - 2¹ = 1984681823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1984681823) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2178120 + ... + 2179030.

It is an arithmetic number, because the mean of its divisors is an integer number (59936640).

Almost surely, 2^1984681825 is an apocalyptic number.

It is an amenable number.

1984681825 is a deficient number, since it is larger than the sum of its proper divisors (892276895).

1984681825 is a wasteful number, since it uses less digits than its factorization.

1984681825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198 (or 1193 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 52.

The square root of 1984681825 is about 44549.7679567470. The cubic root of 1984681825 is about 1256.6961874720.

The spelling of 1984681825 in words is "one billion, nine hundred eighty-four million, six hundred eighty-one thousand, eight hundred twenty-five".