18042066492 has 24 divisors (see below), whose sum is σ = 42405444816. Its totient is φ = 5970123648.

The previous prime is 18042066481. The next prime is 18042066499. The reversal of 18042066492 is 29466024081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18042066499) 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, 5485603 + ... + 5488890.

It is an arithmetic number, because the mean of its divisors is an integer number (1766893534).

Almost surely, 2^18042066492 is an apocalyptic number.

18042066492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18042066492 is an abundant number, since it is smaller than the sum of its proper divisors (24363378324).

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

18042066492 is a wasteful number, since it uses less digits than its factorization.

18042066492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10974637 (or 10974635 counting only the distinct ones).

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

The spelling of 18042066492 in words is "eighteen billion, forty-two million, sixty-six thousand, four hundred ninety-two".