1788493342 has 4 divisors (see below), whose sum is σ = 2682740016. Its totient is φ = 894246670.

The previous prime is 1788493331. The next prime is 1788493361. The reversal of 1788493342 is 2433948871.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2433948871 = 17 ⋅143173463.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447123334 + ... + 447123337.

It is an arithmetic number, because the mean of its divisors is an integer number (670685004).

Almost surely, 2^1788493342 is an apocalyptic number.

1788493342 is a deficient number, since it is larger than the sum of its proper divisors (894246674).

1788493342 is an equidigital number, since it uses as much as digits as its factorization.

1788493342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894246673.

The product of its digits is 1161216, while the sum is 49.

The square root of 1788493342 is about 42290.5821903648. The cubic root of 1788493342 is about 1213.8427887330.

The spelling of 1788493342 in words is "one billion, seven hundred eighty-eight million, four hundred ninety-three thousand, three hundred forty-two".