1984634 has 4 divisors (see below), whose sum is σ = 2976954. Its totient is φ = 992316.

The previous prime is 1984571. The next prime is 1984639. The reversal of 1984634 is 4364891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1974025 + 10609 = 1405^2 + 103^2 .

It is a super-2 number, since 2×1984634² = 7877544227912, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1984594 and 1984603.

It is not an unprimeable number, because it can be changed into a prime (1984639) by changing a digit.

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 as a sum of consecutive naturals, namely, 496157 + ... + 496160.

2^1984634 is an apocalyptic number.

1984634 is a deficient number, since it is larger than the sum of its proper divisors (992320).

1984634 is an equidigital number, since it uses as much as digits as its factorization.

1984634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992319.

The product of its digits is 20736, while the sum is 35.

The square root of 1984634 is about 1408.7703858330. The cubic root of 1984634 is about 125.6686093163.

The spelling of 1984634 in words is "one million, nine hundred eighty-four thousand, six hundred thirty-four".