18163336486 has 32 divisors (see below), whose sum is σ = 30669928128. Its totient is φ = 8021544960.

The previous prime is 18163336481. The next prime is 18163336489. The reversal of 18163336486 is 68463336181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18163336481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177675 + ... + 260566.

It is an arithmetic number, because the mean of its divisors is an integer number (958435254).

Almost surely, 2^18163336486 is an apocalyptic number.

18163336486 is a deficient number, since it is larger than the sum of its proper divisors (12506591642).

18163336486 is a wasteful number, since it uses less digits than its factorization.

18163336486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438336.

The product of its digits is 1492992, while the sum is 49.

The spelling of 18163336486 in words is "eighteen billion, one hundred sixty-three million, three hundred thirty-six thousand, four hundred eighty-six".