18483118491 has 8 divisors (see below), whose sum is σ = 25310216464. Its totient is φ = 11989049760.

The previous prime is 18483118483. The next prime is 18483118501. The reversal of 18483118491 is 19481138481.

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

It is not a de Polignac number, because 18483118491 - 2³ = 18483118483 is a prime.

It is a super-2 number, since 2×18483118491² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18483118491.

It is not an unprimeable number, because it can be changed into a prime (18483118411) 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, 83257180 + ... + 83257401.

It is an arithmetic number, because the mean of its divisors is an integer number (3163777058).

Almost surely, 2^18483118491 is an apocalyptic number.

18483118491 is a deficient number, since it is larger than the sum of its proper divisors (6827097973).

18483118491 is a wasteful number, since it uses less digits than its factorization.

18483118491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166514621.

The product of its digits is 221184, while the sum is 48.

The spelling of 18483118491 in words is "eighteen billion, four hundred eighty-three million, one hundred eighteen thousand, four hundred ninety-one".