1984965 has 8 divisors (see below), whose sum is σ = 3175968. Its totient is φ = 1058640.

The previous prime is 1984921. The next prime is 1984979. The reversal of 1984965 is 5694891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1984965 - 2⁶ = 1984901 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66151 + ... + 66180.

It is an arithmetic number, because the mean of its divisors is an integer number (396996).

2^1984965 is an apocalyptic number.

1984965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1984965 is a deficient number, since it is larger than the sum of its proper divisors (1191003).

1984965 is a wasteful number, since it uses less digits than its factorization.

1984965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132339.

The product of its digits is 77760, while the sum is 42.

The square root of 1984965 is about 1408.8878592706. The cubic root of 1984965 is about 125.6755953226.

The spelling of 1984965 in words is "one million, nine hundred eighty-four thousand, nine hundred sixty-five".