18494808286 has 4 divisors (see below), whose sum is σ = 27742212432. Its totient is φ = 9247404142.

The previous prime is 18494808191. The next prime is 18494808349. The reversal of 18494808286 is 68280849481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68280849481 = 13 ⋅5252373037.

It is a self number, because there is not a number n which added to its sum of digits gives 18494808286.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4623702070 + ... + 4623702073.

It is an arithmetic number, because the mean of its divisors is an integer number (6935553108).

Almost surely, 2^18494808286 is an apocalyptic number.

18494808286 is a deficient number, since it is larger than the sum of its proper divisors (9247404146).

18494808286 is an equidigital number, since it uses as much as digits as its factorization.

18494808286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9247404145.

The product of its (nonzero) digits is 7077888, while the sum is 58.

The spelling of 18494808286 in words is "eighteen billion, four hundred ninety-four million, eight hundred eight thousand, two hundred eighty-six".