1983734 has 4 divisors (see below), whose sum is σ = 2975604. Its totient is φ = 991866.

The previous prime is 1983731. The next prime is 1983743. The reversal of 1983734 is 4373891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4373891 = 113 ⋅38707.

It is a junction number, because it is equal to n+sod(n) for n = 1983694 and 1983703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1983731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495932 + ... + 495935.

It is an arithmetic number, because the mean of its divisors is an integer number (743901).

2^1983734 is an apocalyptic number.

1983734 is a deficient number, since it is larger than the sum of its proper divisors (991870).

1983734 is an equidigital number, since it uses as much as digits as its factorization.

1983734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991869.

The product of its digits is 18144, while the sum is 35.

The square root of 1983734 is about 1408.4509221127. The cubic root of 1983734 is about 125.6496102045.

The spelling of 1983734 in words is "one million, nine hundred eighty-three thousand, seven hundred thirty-four".