18199482481 has 16 divisors (see below), whose sum is σ = 21166185600. Its totient is φ = 15521856768.

The previous prime is 18199482437. The next prime is 18199482491. The reversal of 18199482481 is 18428499181.

It is a cyclic number.

It is not a de Polignac number, because 18199482481 - 2¹⁷ = 18199351409 is a prime.

It is a super-2 number, since 2×18199482481² (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 (18199482491) 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, 1217466 + ... + 1232323.

It is an arithmetic number, because the mean of its divisors is an integer number (1322886600).

Almost surely, 2^18199482481 is an apocalyptic number.

It is an amenable number.

18199482481 is a deficient number, since it is larger than the sum of its proper divisors (2966703119).

18199482481 is a wasteful number, since it uses less digits than its factorization.

18199482481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449848.

The product of its digits is 1327104, while the sum is 55.

The spelling of 18199482481 in words is "eighteen billion, one hundred ninety-nine million, four hundred eighty-two thousand, four hundred eighty-one".