18003412436 has 24 divisors (see below), whose sum is σ = 31822836864. Its totient is φ = 8911234080.

The previous prime is 18003412421. The next prime is 18003412459. The reversal of 18003412436 is 63421430081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1605746 + ... + 1616918.

It is an arithmetic number, because the mean of its divisors is an integer number (1325951536).

Almost surely, 2^18003412436 is an apocalyptic number.

It is an amenable number.

18003412436 is a deficient number, since it is larger than the sum of its proper divisors (13819424428).

18003412436 is a wasteful number, since it uses less digits than its factorization.

18003412436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15191 (or 15189 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 18003412436 in words is "eighteen billion, three million, four hundred twelve thousand, four hundred thirty-six".