1681836423 has 8 divisors (see below), whose sum is σ = 2250429936. Its totient is φ = 1117233600.

The previous prime is 1681836421. The next prime is 1681836461. The reversal of 1681836423 is 3246381861.

1681836423 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1681836423 - 2¹ = 1681836421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681836421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996688 + ... + 998373.

It is an arithmetic number, because the mean of its divisors is an integer number (281303742).

Almost surely, 2^1681836423 is an apocalyptic number.

1681836423 is a deficient number, since it is larger than the sum of its proper divisors (568593513).

1681836423 is a wasteful number, since it uses less digits than its factorization.

1681836423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995345.

The product of its digits is 165888, while the sum is 42.

The square root of 1681836423 is about 41010.1990119531. The cubic root of 1681836423 is about 1189.2173897630.

The spelling of 1681836423 in words is "one billion, six hundred eighty-one million, eight hundred thirty-six thousand, four hundred twenty-three".