1993741 has 4 divisors (see below), whose sum is σ = 2002752. Its totient is φ = 1984732.

The previous prime is 1993729. The next prime is 1993757. The reversal of 1993741 is 1473991.

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: 1473991 = 41 ⋅35951.

It is a cyclic number.

It is not a de Polignac number, because 1993741 - 2¹⁷ = 1862669 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1993697 and 1993706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993711) 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, 4165 + ... + 4618.

It is an arithmetic number, because the mean of its divisors is an integer number (500688).

2^1993741 is an apocalyptic number.

It is an amenable number.

1993741 is a deficient number, since it is larger than the sum of its proper divisors (9011).

1993741 is an equidigital number, since it uses as much as digits as its factorization.

1993741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9010.

The product of its digits is 6804, while the sum is 34.

The square root of 1993741 is about 1411.9989376767. The cubic root of 1993741 is about 125.8605368822.

The spelling of 1993741 in words is "one million, nine hundred ninety-three thousand, seven hundred forty-one".