1648331 has 8 divisors (see below), whose sum is σ = 1723680. Its totient is φ = 1574272.

The previous prime is 1648291. The next prime is 1648349. The reversal of 1648331 is 1338461.

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

It is a cyclic number.

It is not a de Polignac number, because 1648331 - 2¹⁰ = 1647307 is a prime.

It is a super-2 number, since 2×1648331² = 5433990171122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1648331.

It is not an unprimeable number, because it can be changed into a prime (1648391) 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 in 7 ways as a sum of consecutive naturals, for example, 3026 + ... + 3528.

It is an arithmetic number, because the mean of its divisors is an integer number (215460).

2^1648331 is an apocalyptic number.

1648331 is a deficient number, since it is larger than the sum of its proper divisors (75349).

1648331 is a wasteful number, since it uses less digits than its factorization.

1648331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645.

The product of its digits is 1728, while the sum is 26.

The square root of 1648331 is about 1283.8734361299. The cubic root of 1648331 is about 118.1267191784.

The spelling of 1648331 in words is "one million, six hundred forty-eight thousand, three hundred thirty-one".