1984484387 has 4 divisors (see below), whose sum is σ = 1984587936. Its totient is φ = 1984380840.

The previous prime is 1984484377. The next prime is 1984484389. The reversal of 1984484387 is 7834844891.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7834844891 = 40459 ⋅193649.

It is a cyclic number.

It is not a de Polignac number, because 1984484387 - 2⁴ = 1984484371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1984484389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13688 + ... + 64469.

It is an arithmetic number, because the mean of its divisors is an integer number (496146984).

Almost surely, 2^1984484387 is an apocalyptic number.

1984484387 is a deficient number, since it is larger than the sum of its proper divisors (103549).

1984484387 is an equidigital number, since it uses as much as digits as its factorization.

1984484387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103548.

The product of its digits is 6193152, while the sum is 56.

The square root of 1984484387 is about 44547.5519753892. The cubic root of 1984484387 is about 1256.6545136536.

The spelling of 1984484387 in words is "one billion, nine hundred eighty-four million, four hundred eighty-four thousand, three hundred eighty-seven".