1993135 has 4 divisors (see below), whose sum is σ = 2391768. Its totient is φ = 1594504.

The previous prime is 1993127. The next prime is 1993151. The reversal of 1993135 is 5313991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5313991 = 281 ⋅18911.

It is a cyclic number.

It is not a de Polignac number, because 1993135 - 2³ = 1993127 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1993097 and 1993106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199309 + ... + 199318.

It is an arithmetic number, because the mean of its divisors is an integer number (597942).

2^1993135 is an apocalyptic number.

1993135 is a deficient number, since it is larger than the sum of its proper divisors (398633).

1993135 is an equidigital number, since it uses as much as digits as its factorization.

1993135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398632.

The product of its digits is 3645, while the sum is 31.

The square root of 1993135 is about 1411.7843319714. The cubic root of 1993135 is about 125.8477837690.

The spelling of 1993135 in words is "one million, nine hundred ninety-three thousand, one hundred thirty-five".