18466493135 has 4 divisors (see below), whose sum is σ = 22159791768. Its totient is φ = 14773194504.

The previous prime is 18466493063. The next prime is 18466493141. The reversal of 18466493135 is 53139466481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53139466481 = 73 ⋅727937897.

It is a cyclic number.

It is not a de Polignac number, because 18466493135 - 2¹² = 18466489039 is a prime.

It is a super-2 number, since 2×18466493135² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 1846649309 + ... + 1846649318.

It is an arithmetic number, because the mean of its divisors is an integer number (5539947942).

Almost surely, 2^18466493135 is an apocalyptic number.

18466493135 is a deficient number, since it is larger than the sum of its proper divisors (3693298633).

18466493135 is an equidigital number, since it uses as much as digits as its factorization.

18466493135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3693298632.

The product of its digits is 1866240, while the sum is 50.

The spelling of 18466493135 in words is "eighteen billion, four hundred sixty-six million, four hundred ninety-three thousand, one hundred thirty-five".