1993258 has 4 divisors (see below), whose sum is σ = 2989890. Its totient is φ = 996628.

The previous prime is 1993247. The next prime is 1993259. The reversal of 1993258 is 8523991.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1046529 + 946729 = 1023^2 + 973^2 .

It is not an unprimeable number, because it can be changed into a prime (1993259) 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 as a sum of consecutive naturals, namely, 498313 + ... + 498316.

2^1993258 is an apocalyptic number.

1993258 is a deficient number, since it is larger than the sum of its proper divisors (996632).

1993258 is an equidigital number, since it uses as much as digits as its factorization.

1993258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996631.

The product of its digits is 19440, while the sum is 37.

The square root of 1993258 is about 1411.8278931938. The cubic root of 1993258 is about 125.8503724812.

The spelling of 1993258 in words is "one million, nine hundred ninety-three thousand, two hundred fifty-eight".