18278118283 has 8 divisors (see below), whose sum is σ = 18812673936. Its totient is φ = 17747788800.

The previous prime is 18278118281. The next prime is 18278118307. The reversal of 18278118283 is 38281187281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18278118283 - 2¹ = 18278118281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18278118281) 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, 1047766 + ... + 1065067.

It is an arithmetic number, because the mean of its divisors is an integer number (2351584242).

Almost surely, 2^18278118283 is an apocalyptic number.

18278118283 is a deficient number, since it is larger than the sum of its proper divisors (534555653).

18278118283 is a wasteful number, since it uses less digits than its factorization.

18278118283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113085.

The product of its digits is 344064, while the sum is 49.

The spelling of 18278118283 in words is "eighteen billion, two hundred seventy-eight million, one hundred eighteen thousand, two hundred eighty-three".