18105996 has 12 divisors (see below), whose sum is σ = 42247352. Its totient is φ = 6035328.

The previous prime is 18105977. The next prime is 18106027. The reversal of 18105996 is 69950181.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754405 + ... + 754428.

Almost surely, 2^18105996 is an apocalyptic number.

It is an amenable number.

18105996 is an abundant number, since it is smaller than the sum of its proper divisors (24141356).

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

18105996 is a wasteful number, since it uses less digits than its factorization.

18105996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508840 (or 1508838 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 18105996 is about 4255.1140995278. The cubic root of 18105996 is about 262.5875553737.

The spelling of 18105996 in words is "eighteen million, one hundred five thousand, nine hundred ninety-six".