1984512849 has 16 divisors (see below), whose sum is σ = 2935491840. Its totient is φ = 1182348560.

The previous prime is 1984512847. The next prime is 1984512853. The reversal of 1984512849 is 9482154891.

It is a cyclic number.

It is not a de Polignac number, because 1984512849 - 2¹ = 1984512847 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1984512847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507687 + ... + 511580.

It is an arithmetic number, because the mean of its divisors is an integer number (183468240).

Almost surely, 2^1984512849 is an apocalyptic number.

It is an amenable number.

1984512849 is a deficient number, since it is larger than the sum of its proper divisors (950978991).

1984512849 is a wasteful number, since it uses less digits than its factorization.

1984512849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019340.

The product of its digits is 829440, while the sum is 51.

The square root of 1984512849 is about 44547.8714306307. The cubic root of 1984512849 is about 1256.6605213820.

The spelling of 1984512849 in words is "one billion, nine hundred eighty-four million, five hundred twelve thousand, eight hundred forty-nine".