1648742 has 8 divisors (see below), whose sum is σ = 2478600. Its totient is φ = 822544.

The previous prime is 1648739. The next prime is 1648753. The reversal of 1648742 is 2478461.

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

It is a junction number, because it is equal to n+sod(n) for n = 1648699 and 1648708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1109 + ... + 2127.

It is an arithmetic number, because the mean of its divisors is an integer number (309825).

2^1648742 is an apocalyptic number.

1648742 is a deficient number, since it is larger than the sum of its proper divisors (829858).

1648742 is a wasteful number, since it uses less digits than its factorization.

1648742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830.

The product of its digits is 10752, while the sum is 32.

The square root of 1648742 is about 1284.0334886599. The cubic root of 1648742 is about 118.1365363909.

The spelling of 1648742 in words is "one million, six hundred forty-eight thousand, seven hundred forty-two".