1974823 has 4 divisors (see below), whose sum is σ = 1995280. Its totient is φ = 1954368.

The previous prime is 1974787. The next prime is 1974851. The reversal of 1974823 is 3284791.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1974823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1974883) 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, 10083 + ... + 10276.

It is an arithmetic number, because the mean of its divisors is an integer number (498820).

2^1974823 is an apocalyptic number.

1974823 is a deficient number, since it is larger than the sum of its proper divisors (20457).

1974823 is an equidigital number, since it uses as much as digits as its factorization.

1974823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20456.

The product of its digits is 12096, while the sum is 34.

The square root of 1974823 is about 1405.2839570706. The cubic root of 1974823 is about 125.4611870263.

It can be divided in two parts, 197 and 4823, that multiplied together give a triangular number (950131 = T₁₃₇₈).

The spelling of 1974823 in words is "one million, nine hundred seventy-four thousand, eight hundred twenty-three".