1601943 has 8 divisors (see below), whose sum is σ = 2441088. Its totient is φ = 915384.

The previous prime is 1601869. The next prime is 1601953. The reversal of 1601943 is 3491061.

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

It is not a de Polignac number, because 1601943 - 2⁸ = 1601687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601953) 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, 38121 + ... + 38162.

It is an arithmetic number, because the mean of its divisors is an integer number (305136).

2^1601943 is an apocalyptic number.

1601943 is a deficient number, since it is larger than the sum of its proper divisors (839145).

1601943 is an equidigital number, since it uses as much as digits as its factorization.

1601943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76293.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1601943 is about 1265.6788692239. The cubic root of 1601943 is about 117.0080350972.

The spelling of 1601943 in words is "one million, six hundred one thousand, nine hundred forty-three".