18616288481 has 16 divisors (see below), whose sum is σ = 23506723584. Its totient is φ = 14365215744.

The previous prime is 18616288393. The next prime is 18616288513. The reversal of 18616288481 is 18488261681.

It is a cyclic number.

It is not a de Polignac number, because 18616288481 - 2²² = 18612094177 is a prime.

It is a super-2 number, since 2×18616288481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18616288381) 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, 3398120 + ... + 3403593.

It is an arithmetic number, because the mean of its divisors is an integer number (1469170224).

Almost surely, 2^18616288481 is an apocalyptic number.

It is an amenable number.

18616288481 is a deficient number, since it is larger than the sum of its proper divisors (4890435103).

18616288481 is a wasteful number, since it uses less digits than its factorization.

18616288481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6801760.

The product of its digits is 1179648, while the sum is 53.

The spelling of 18616288481 in words is "eighteen billion, six hundred sixteen million, two hundred eighty-eight thousand, four hundred eighty-one".