1984345 has 16 divisors (see below), whose sum is σ = 2629440. Its totient is φ = 1425600.

The previous prime is 1984343. The next prime is 1984351. The reversal of 1984345 is 5434891.

It is not a de Polignac number, because 1984345 - 2¹ = 1984343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1984345.

It is not an unprimeable number, because it can be changed into a prime (1984343) 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, 5830 + ... + 6160.

It is an arithmetic number, because the mean of its divisors is an integer number (164340).

2^1984345 is an apocalyptic number.

It is an amenable number.

1984345 is a deficient number, since it is larger than the sum of its proper divisors (645095).

1984345 is a wasteful number, since it uses less digits than its factorization.

1984345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456.

The product of its digits is 17280, while the sum is 34.

The square root of 1984345 is about 1408.6678103797. The cubic root of 1984345 is about 125.6625091166.

The spelling of 1984345 in words is "one million, nine hundred eighty-four thousand, three hundred forty-five".