1993071 has 4 divisors (see below), whose sum is σ = 2657432. Its totient is φ = 1328712.

The previous prime is 1993067. The next prime is 1993087. The reversal of 1993071 is 1703991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1703991 = 3 ⋅567997.

It is not a de Polignac number, because 1993071 - 2² = 1993067 is a prime.

It is a super-2 number, since 2×1993071² = 7944664022082, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332176 + ... + 332181.

It is an arithmetic number, because the mean of its divisors is an integer number (664358).

2^1993071 is an apocalyptic number.

1993071 is a deficient number, since it is larger than the sum of its proper divisors (664361).

1993071 is an equidigital number, since it uses as much as digits as its factorization.

1993071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664360.

The product of its (nonzero) digits is 1701, while the sum is 30.

The square root of 1993071 is about 1411.7616654379. The cubic root of 1993071 is about 125.8464367546.

The spelling of 1993071 in words is "one million, nine hundred ninety-three thousand, seventy-one".