1641433 has 4 divisors (see below), whose sum is σ = 1666000. Its totient is φ = 1616868.

The previous prime is 1641407. The next prime is 1641457. The reversal of 1641433 is 3341461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3341461 = 433 ⋅7717.

It is a cyclic number.

It is not a de Polignac number, because 1641433 - 2¹⁷ = 1510361 is a prime.

It is a Duffinian number.

1641433 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1641403) 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 3 ways as a sum of consecutive naturals, for example, 12183 + ... + 12316.

It is an arithmetic number, because the mean of its divisors is an integer number (416500).

2^1641433 is an apocalyptic number.

It is an amenable number.

1641433 is a deficient number, since it is larger than the sum of its proper divisors (24567).

1641433 is an equidigital number, since it uses as much as digits as its factorization.

1641433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24566.

The product of its digits is 864, while the sum is 22.

The square root of 1641433 is about 1281.1842178235. The cubic root of 1641433 is about 117.9617083454.

Adding to 1641433 its reverse (3341461), we get a palindrome (4982894).

The spelling of 1641433 in words is "one million, six hundred forty-one thousand, four hundred thirty-three".