18423528340 has 48 divisors (see below), whose sum is σ = 44272916352. Its totient is φ = 6308574336.

The previous prime is 18423528329. The next prime is 18423528367. The reversal of 18423528340 is 4382532481.

It is a junction number, because it is equal to n+sod(n) for n = 18423528293 and 18423528302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26574 + ... + 193786.

It is an arithmetic number, because the mean of its divisors is an integer number (922352424).

Almost surely, 2^18423528340 is an apocalyptic number.

18423528340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18423528340 is an abundant number, since it is smaller than the sum of its proper divisors (25849388012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18423528340 is a wasteful number, since it uses less digits than its factorization.

18423528340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168016 (or 168014 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 18423528340 in words is "eighteen billion, four hundred twenty-three million, five hundred twenty-eight thousand, three hundred forty".